To overcome the problem of skin effect in high frequency circuit conductor with a large surface area must be used.
Skin effect
The skin effect is a propensity for alternating current (AC) to flow mostly towards an electrical conductor's outside surface, such as a metal wire. As the frequency rises, the effect becomes increasingly clear.The skin effect is the propensity for alternating high-frequency currents to congregate on a conducting material's surface. This phenomenon causes the conductor's resistance to rise by limiting the current to a tiny portion of the entire cross-sectional area.
what is Frequency?
The frequency of a repeated event is its number of instances per time unit. It differs from angular frequency and is sometimes referred to as frequency for clarification. The unit of frequency is hertz (Hz), or one occurrence per second. The duration is the inverse of frequency since it is the amount of time that passes between events.
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what is the minimum cross-sectional area required of a vertical steel cable from which is suspended a 280- kg chandelier? assume a safety factor of 8.0.
6.68x [tex]10^{-7}[/tex] [tex]m^{2}[/tex] is the minimum cross-sectional area required of a vertical steel cable from which is suspended a 280- kg chandelier mass, m, is equal to 280 kg; safety factor, 8.
Steel's tensile strength is P and its stress is force (f)/Area ( A)
A = F /P
A is equal to mg /8x tensile A.
280 x 9 . 8/ 8 X 500 X106 \s
A = 6.68x [tex]10^{-7}[/tex] [tex]m^{2}[/tex]
What is Tensile Strenth?
Stress, which is quantified as force per area, is the definition of tensile strength. Usually, it is expressed in terms of Pa or psi. Tensile modulus is an intense attribute, which means that the size of a test specimen has no bearing on its value. However, it also depends on other elements like the specimen's preparation, temperature, and the existence of surface flaws.
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a scuba diver and her gear displace a volume of 69.6 l and have a total mass of 72.8 kg. (a) what is the buoyant force on the diver in seawater? (b) will the diver sink or float?
This refers to an upward force exerted by a fluid that opposes the weight of a partially or fully immersed object. In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid. the buoyant force is also known as upthrust. It operates under Archimedes' principle.
The formula for calculating buoyant force:
Fb = -ρ g V
Where,
Fb = buoyant force
ρ = fluid density
g = acceleration due to gravity
V = fluid volume
From the question:
V = 69.6 l
m = 72.8 kg
g = 9.8m/s
To calculate density, ρ:
ρ = Mass/Volume
ρ = 72.8 kg/69.6 l
ρ = 1.05kg/l
To calculate buoyant force, Fb:
Fb = -ρ g V
Fb = -1.05kg/l * 9.8m/s * 69.6 l
Fb = -716.2 N
Note: Negative buoyancy suggests that the immersed object is denser than the fluid displaced which results in the sinking of the object. Neutral buoyancy takes place when the weight of the immersed object is equivalent to the fluid displaced. The dive taken by the scuba diver is a perfect example of neutral buoyancy.
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If the forces exerted on a 2-kg object are 50 N east and 30 N west, what is the object's acceleration?
If the forces exerted on a 2-kg object are 50 N east and 30 N west, the object's acceleration is 10 m/s².
What is acceleration?Acceleration is defined as the speed at which an object's velocity changes over time. They are vector quantities, accelerations. The direction of the net force acting on an object determines the direction of its acceleration.
To calculate acceleration we use formula
F = m x a
Given m = 2 kg
Net force = 50 N - 30 N
= 20 N
a = F / m
a = 20 N / 2 kg
a = 10 m/s²
Thus, if the forces exerted on a 2-kg object are 50 N east and 30 N west, the object's acceleration is 10 m/s².
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suppose a woman does 550 j of work and 9800 j of heat transfer occurs into the environment in the process. (a) what is the decrease in her internal energy (in kcal), assuming no change in temperature or consumption of food? (that is, there is no other energy transfer.) -10350 kcal (b) what is her efficiency (in percent)? %
W = -500 J is the work, which is why it's negative because a woman is doing it.
Briefing
The heat transfer into the system,
Q = 9500 J, makes it positive.
(a) Heat and work are added to determine the change in internal energy, which is:
ΔU = Q+W
We replace with:
ΔU = 9500 J-500 J
ΔU = 9000 J\s(b) (b) The quantity of useful work completed given a total energy supply is now what is generally referred to as an efficiency. From this, we may divide the woman's labour by the shift in internal energy, giving us
= 500 j / 9000 j.
We get:
ϵ = 0.0556~ 5.56%
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describe how energy travels from the nuclear core of the sun to the atmosphere. in your answer, include the name of each layer and describe how energy moves through the layer.
Energy travels from the nuclear core of the Sun to the atmosphere through a process called thermal radiation. Thermal radiation is the emission of electromagnetic waves from a body due to its temperature.
The Sun is composed of several layers, including the core, the radiative zone, and the convective zone. Energy travels through these layers as follows:
1. Core: The core is the innermost layer of the Sun and is where nuclear fusion reactions take place. In these reactions, hydrogen atoms are combined to form helium, releasing a large amount of energy in the process. This energy is in the form of electromagnetic radiation, including visible light and ultraviolet radiation.
2. Radiative zone: The radiative zone is the layer of the Sun just outside the core. In this layer, the energy released in the core is transported outward through the process of thermal radiation. Photons, or particles of light, are emitted from the surface of the core and travel through the radiative zone, gradually losing energy as they move outward.
3. Convective zone: The convective zone is the outer layer of the Sun. In this layer, the energy transported by thermal radiation is not enough to sustain the temperature of the Sun, so the energy is transferred through the process of convection. In convection, hot gas rises and cool gas sinks, resulting in the transfer of heat from the interior of the Sun to the surface.
Overall, energy travels from the nuclear core of the Sun to the atmosphere through the process of thermal radiation and convection. These processes help to transport energy from the core of the Sun to the surface, where it is emitted into space as electromagnetic radiation.
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children in a tree house lift a small dog in a basket 4.75 mm up to their house. part a if it takes 221 jj of work to do this, what is the combined mass of the dog and basket?
The combined mass of the dog and basket is 4750 kg.
To determine the combined mass of the dog and basket, we can use the equation for work, which is defined as the product of the force applied and the distance over which the force is applied. In this case, the force applied is the weight of the dog and basket, and the distance over which the force is applied is the height of the tree house, 4.75 mm.
The equation for work can be written as follows:
W = F * dwhere W is the work done, F is the force applied, and d is the distance over which the force is applied.
Substituting the values given in the problem, we get the following equation:
221 J = F * 4.75 mm
To solve for the force F, we need to convert the distance from millimeters to meters. We can do this by dividing the distance by 1000:
221 J = F * 4.75 mm / 1000 m/mm
= F * 0.004750 m
Solving for the force F, we get:
F = 221 J / 0.004750 m
= 46600 N
The force F is equal to the weight of the dog and basket. The weight of an object is equal to its mass multiplied by the acceleration due to gravity, which is 9.8 m/s^2. Therefore, the combined mass of the dog and basket is:
m = F / g
= 46600 N / 9.8 m/s^2
= 4750 kg
This is the final answer.
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. a pulley consists of a uniform disk with mass m and radius is r and is free to rotate around a frictionless axle through its center. a mass m is hung from a string wrapped around the pulley. if the string does not slip, what is the acceleration of m?
The acceleration of m is 2g/3 in a pulley consists of a uniform disk with mass m and radius is r and is free to rotate around a frictionless axle through its center. a mass m is hung from a string wrapped around the pulley.
mgT=ma
TR=mRa/2
T = mRa /2
= ma/2
3ma /2 = mg
a = 2g/3
The pulley's mass increases as the acceleration of the object decreases. Calculating the acceleration requires knowledge of the pulley's mass and moment of inertia. Keep in mind that the acceleration will be independent of the radius for the usual pulley forms (such as disc, hoop, and disc, mostly hoop).A pulley system's velocity is typically constant.Unless if you want to measure the centripetal acceleration of the rotating components.Newton's second law of motion states that an object's acceleration is equal to its mass divided by the net force acting on it, or a = F× m.For more information on pulley system kindly visit to
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1.
KNOW the UNITS!!!!!! SHOW YOUR WORK
What is the net force exerted on a 150.0kg race-car driver while the race car is accelerating from 0 to 58.7m/s i
3.50s?
Answer:
2515.7N
Explanation:
First step is to find the acceleration:
U = 0 and V =58.7 m/s
a = (V-U)/t
where, t = 3.5s
a = 58.7/3.5
so, in order to find the net force,
F= ma
= 150kg × 58.7/3.5
= 2515.7 N
true or faule because only one path exists for the current to flow through a series circuit, it must flow through each resistor in the circuit.
In a series circuit, there is only one path for the current to go, hence each resistor in the circuit must conduct current. For series-connected resistors, this assertion is accurate.
Why does a series circuit just have one path for current?This is thus because a series circuit only has one path for current to move along. Since conductors carry electric charge, the rate of flow at any point in the circuit at any given instant must be equal.
What takes place when a circuit path is damaged?Current will stop flowing in the circuit if any section of this path is damaged. Any series-connected set of parts in a circuit that doesn't have any junctions must all have the same amount of current flowing through them. Devices are connected in a parallel circuit so that current can go along more than one closed path.
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What is the primary classification trait used to explain how scientists divide rocks into the three classification groups?
a. Composition
b. Formation
c. Location
d. Texture
Composition and texture is the primary classification trait used to explain how scientists divide rocks into the three classification.
How are rocks divided into the three classification groups by scientists?Rocks can be categorized in one of two ways: first, according to the processes by which they form, with rocks being categorized as either sedimentary, igneous, or metamorphic. Grain or crystal size is another common way to categorize rocks.
Two criteria—texture and composition—are used to categorize rocks. The sizes, shapes, and relationships between the various mineral grains and other components that make up a rock are what determine its texture. The process that created the rock controls these elements.
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An Olympic sprinter runs two laps around an 800 m circular track in 5 minutes.
What is the sprinter's displacement after she returns to her initial position?
O
O
O
0m
800 m
160 m
1,600 m
The sprinter's displacement after she returns to her initial position is 0 m.
option A is the correct answer.
What is displacement of the sprinter?
The displacement of the sprinter is the change in the position of the sprinter after the race. It is also the shorted distance between the initial position of the sprinter and the final position of the sprinter.
Mathematically, the formula for the change in the position of the sprinter is given as;
Δx = xf - xi
where;
xf is the final position of the sprinterxi is the initial position of the sprinterwhen the sprinter starts from point A of a circular track and returns to the starting point A, that is one lap. When the sprinter moves again and returns to the same starting point A, that is two laps.
From the above illustration, the final position of the sprinter is equal to the initial position of the sprinter.
Δx = xf - xi
xf = xi
Δx = 0 m
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a uniform thin rod of length 0.50 m and mass 4.0 kg can rotate in a horizontal plane about its center. a 3.0 gram bullet hits the end of the rod (initially at rest) at an angle of 60 degrees and imbeds in the rod. if the angular speed of the rod is 10. rad/s after the bullet strikes, what is the speed of the bullet before it strikes the rod?
The speed of the bullet before it strikes the rod is 67 m/s. To determine the speed of the bullet before it strikes the rod, we need to consider the conservation of angular momentum.
The moment of inertia of a thin rod about its center is given by the following formula:
I = (1/3) * m * L^2where I is the moment of inertia, m is the mass of the rod, and L is the length of the rod.
Substituting the values given in the problem, we find that the moment of inertia of the rod is
(1/3) * 4.0 kg * (0.50 m)^2 = 0.67 kg*m^2.In this case, the bullet strikes the rod, transferring some of its linear momentum to the rod in the form of angular momentum. The change in angular momentum of the rod is equal to the angular momentum of the bullet.
We can use the conservation of angular momentum to write the following equation:
I1 * w1 + J = I2 * w2where I1 is the initial moment of inertia of the rod, w1 is the initial angular velocity of the rod, J is the angular momentum of the bullet, I2 is the final moment of inertia of the rod, and w2 is the final angular velocity of the rod.
Since the initial angular velocity of the rod is zero, we can simplify the equation as follows:
J = I2 * w2
Substituting the values given in the problem, we find that the angular momentum of the bullet is
0.67 kgm^2 * 10 rad/s = 6.7 kgm^2/s.To determine the speed of the bullet before it strikes the rod, we need to consider the bullet's mass and the angle at which it strikes the rod. The mass of the bullet is given as 3.0 grams, which is equivalent to 0.003 kg. The angle at which the bullet strikes the rod is given as 60 degrees.
We can use the following formula to calculate the speed of the bullet before it strikes the rod:
v = (J/m) * sin(theta)Substituting the values given in the problem, we find that the speed of the bullet before it strikes the rod is (6.7 kg*m^2/s / 0.003 kg) * sin(60 degrees) = 67 m/s. This is the final answer.
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A 100 kg car starts from 20 m/s and speeds up to 41 m/s in 7 seconds. Determine the car's
acceleration.
Answer: 3 m/s^2
Explanation:
Acceleration equals change in velocity (speed) divided by total time.
a = (v2-v1)/t
a = (41 m/s - 20 m/s) / 7 s
a = 3 m/s^2
Mass is irrelevant in this question.
i have a few questions
multipe choice
8) Kinetic energy is the energy of ________.
9)The potential energy of an object depends on its ________ and its height.
10) The law of ________ of energy states that energy can be neither created nor destroyed, but it can change its form.
11) Stored energy is called ________ energy.
12) When you move your hand or foot, your body has converted potential energy into ________ energy.
13) When coasting while roller skating, you eventually stop due to ________.
please and thank you
Energy refers to the ability or capacity to do work. Energy can be of various types as follows:
Mechanical energy (kinetic or potential)Electrical energyLight energySolar energyHeat energyKinetic energy is energy possessed by an object because of its motion while potential energy is energy possessed by an object because of its position or its condition.
The law of conservation of energy states that energy cannot be created nor destroyed but can only be transformed i.e. converted from one form to another.
Friction is a force that resists the relative motion or tendency to such motion of two bodies in contact.
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which type of wave has a wave perpendicular to the disturbance?responses surface surface longitudinal longitudinal mechanical mechanical transverse
The disruption of a transverse wave propagates perpendicular to the direction of propagation.
Depending on the type of motion they experience, mechanical waves can either be transverse or longitudinal. It should be emphasized that transverse and longitudinal waves can both have periodic behavior.
Transverse wave: what is it?
An oscillating wave that moves in the opposite direction of its oscillations is referred to as a transverse wave in physics. On the other hand, a longitudinal wave travels in the direction of its oscillations. Water waves are transverse waves.
A transverse wave is what sort of wave?
Transverse waves include phenomena like string vibrations and sea surface ripples. The slinky may be swung horizontally up and down to produce a transverse wave. A longitudinal wave's particles are scattered perpendicular to the direction that the wave is moving.
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A student wants to make a simple model of the solar system to help him compare how long it would take for a spaceship to travel between different planets.
Which of the following things is essential for him to do in order to think about how long it would take?
this are the opions
He must make sure that the model of each planet looks like the planet it represents, but he does not need to accurately represent the relative distances between the planets because the most important thing is that models look like the thing they are modeling.
He must accurately represent the relative distances between the planets, but he does not need to make sure that the model of each planet looks like the planet it represents because only the relevant aspects of the thing being modeled need to be modeled accurately.
He must accurately represent the relative distances between the planets and also make sure that the model of each planet looks like the planet it represents, because a model should be as much like the thing being modeled as possible.
He does not need to accurately represent the relative distances between the planets, and he does not need to make sure that the model of each planet looks like the planet it represents, because there are always some differences between a model and the thing being modeled.
Answer:
To make a simple model of the solar system that can be used to compare the time it would take for a spaceship to travel between different planets, the student must accurately represent the relative distances between the planets. This is because the time it would take for a spaceship to travel between two planets depends on the distance between those planets, so accurately representing the distances between the planets is essential for thinking about how long it would take for a spaceship to travel between them.
It is not necessary for the student to make sure that the model of each planet looks like the planet it represents, although this may help make the model more understandable. The most important thing is that the model accurately represents the relative distances between the planets.
In summary, the student must accurately represent the relative distances between the planets in order to think about how long it would take for a spaceship to travel between different planets in the solar system.
terference is a property of a. light waves. b. sound waves. c. water waves. d. all of these e. none of these
When two Polaroids' axes are parallel, light cannot flow between them. a 45° angle between them. Parallelc. Perpendiculard. a pair of these. each of these 45.
An entrepreneur suggests providing polarised background music for offices and allowing those who would rather not hear it to do so by using polarising earbuds.Mechanical vibrations in the form of sound waves are transmitted from an item to the ear. These vibrations may arise from a person's voice, a musical instrument, thunder, or an earthquake and can be audible or inaudible. By connecting a pair of headphones to the speakers and turning on the sound, a sound wave can be heard.
Light is electromagnetic radiation, and light is electromagnetic radiation.
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in an experiment, block is given an initial speed toward block , which is initially at rest. the blocks are on a track that has a motion detector set up, as shown above. when the two blocks collide, there is a completely inelastic collision and the blocks move together with speed . the blocks were both placed on a balance, and it is determined that they have the same mass. the experiment is repeated for four different initial speeds, and the data are shown in the chart below. it appears that the resulting data are not accurate. which measurement most likely produced errors in the data seen in the chart below?
The results that we get from the experiment is accurate within the limits of experimental error. Option E
What is true about the experiment?We know that an experiment is the way by which we can be able to establish a cause and effect relationship. In this case, we can see that there is an inelastic collision that has occurred between the two blocks that have collided in the instance that we can see here.
Looking at the set up of the experiment, it is clear that the block is given an initial speed toward block , which is initially at rest. the blocks are on a track that has a motion detector set up, as shown above.
All of the set up is okay based on the way that such an experiment ought to be arranged to enable us to get a very accurate result out of the work that has been done here.
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if a planet (or asteroid) orbited the sun at three times the distance of mars, its orbital speed would be
If a planet (or asteroid) orbited the sun at three times the distance of mars, its orbital speed would be about one-third to two-thirds the speed of Mars' orbit .
What is meant by solar system?The Sun, our star, and everything gravitationally connected to it, including the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, dwarf planets like Pluto, dozens of moons, and Our solar system is made up of millions of asteroids, comets, and meteoroids.
The Solar System is made up of the Sun, eight planets, and a variety of other celestial bodies. These celestial bodies and planets are drawn to the Sun and circle around it. Our solar system is made up of the Sun, a common star, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
The complete question is : Now, let's turn our attention to rotation curves for orbiting masses which are not rigidly held together like the points on a merry-go-round. The Rotation Curve of the Solar System animation shows the orbits of Mercury, Venus, Earth, and Mars. Click on each of the orbits, and watch the corresponding points appear on the graph below it. If a planet (or asteroid) orbited the Sun at three times the distance of Mars, its orbital speed would be __________.
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What is the relationship between the net force applied to an object and the work done on that object?
Answer:
work done is directly proportional to the net force acting on the object.
Explanation:
work done = Force × displacement
Which choice below explains what is happening in a liquid as it turns into a gas?
a. The particles speed up and spread apart
b. The particles speed up and come closer together
c. The particles slow down and spread apart
d. The particles slow down and come closer together
Answer:
a
Explanation:
As you add thermal energy the particles spread apart and are moving faster ..... a certain volume of water produces a much larger volume of steam as energy is added.....that is how steam engines work !
the rope-and-pulley system of negligible mass shown above supports a block of weight w that is at rest. if the tension throughout the rope is uniform, what is the reading on the spring scale?
The rope-and-pulley system of negligible mass shown above supports a block of weight w that is at rest. if the tension throughout the rope is uniform.
To determine the reading on the spring scale, we can apply Newton's Second Law of Motion to the block of weight w. The net force on the block is equal to the block's mass times its acceleration: F net = ma The only force acting on the block is the force of gravity, which is equal to the weight of the block: F net = F gravity = w The acceleration of the block is zero, since it is at rest: w = ma = m * 0 . This equation tells us that the force of gravity on the block is zero, which means that the block is in equilibrium and the tension in the rope is zero. Therefore, the reading on the spring scale is zero.
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Answer:
W/2
Explanation:
The original question does not include a diagram which is necessary for answering the question.
The diagram shows a spring scale attached to the ceiling. Below the spring, 2 pulleys are attached, holding the block at 2 separate points. As a result, there will be 4 ropes (2 attached to the spring scale, and 2 to the ceiling).
Because the tension is dispersed evenly among the 4 points, we can say that the scale will only read half the weight as the rest of the tension will be held by the ceiling.
Therefore, the spring scale will read W/2
I wish that I can upload the diagram, but unfortunately, I cannot. I assume that you will have access to the diagram.
Hope this helped!
A heavy piece of hanging sculpture is suspended by a 90 cm long 5.0 g steel wire. When the wind blows hard, the wire hums at its fundamental frequency of 95 Hz.What is the mass of the sculpture?
According to the given statement 16.7kg is the mass of the sculpture.
What is a fundamental frequency in physics?The lowest frequency that could be produced by a particular instrument is known as the fundamental frequency. The fundamental frequency is also known as the instrument's first harmonic.
Briefing:Use the string's tautness' fundamental frequency as a formula.
f = (1/2L)*√(T/μ) .... (Eqn1)
Where
f= frequency in Hertz =80Hz
T = The string's tension equals Mg.
M is a symbol for the substance's mass (sculpture)=?
g= 9.8m/s^2
L= Length of the string=90cm=0.9m
μ= string length divided by mass gives the string's density.
mass of string =5g=0.005kg
L=0.9m
μ=0.005/0.9 = 0.0056kg/m
Using (Eqn1)
95= 1/(2*0.9) √(T/0.0056)
171= √(T/0.0056)
Square both sides
29241= T/0.0056
T= 163.74 N
Recall that T =Mg
163.74= M * 9.8
M=163.74/9.8
M= 16.7kg
Consequently, the sculpture weighs 16.7kg.
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suppose the gravitational acceleration at the surface of a certain moon a of jupiter is 2 m/s2. moon b has twice the mass and twice the radius of moon a. what is the gravitational acceleration at its surface? neglect the gravitational acceleration due to jupiter.
Neglecting the gravitational acceleration due to jupiter , the gravitational acceleration at the surface of moon b is 8 m/s².
The gravitational acceleration at the surface of the moon is determined using the equation G*M/r^2, where G is the gravitational constant, M is the mass of the object, and r is the radius of the object.
Calculate the gravitational acceleration at the surface of moon a, using the equation for gravitational acceleration:
g = G * M / r2
where G is the gravitational constant (6.67x10-11 Nm2/kg2), M is the mass of the moon, and r is the radius of the moon.
g = 6.67x10-11 Nm2/kg2 * M / r2
g = 6.67x10-11 Nm2/kg2 * (mass of moon a) / (radius of moon a)2
g = 2 m/s2
Step 2: Calculate the gravitational acceleration at the surface of moon b, using the equation for gravitational acceleration:
g = G * M / r2
where G is the gravitational constant (6.67x10-11 Nm2/kg2), M is the mass of the moon, and r is the radius of the moon.
g = 6.67x10-11 Nm2/kg2 * (2 * (mass of moon a)) / (2 * (radius of moon a))2
g = 8 m/s²
Therefore, the gravitational acceleration at the surface of moon b is 8 m/s².
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3) A skateboarder lands on all four wheels after riding a railing. If the skateboarder
has a weight of 900 N and the area on the bottom of a single wheel is 0.0001 m2,
What pressure does the skateboard put on the ground?
Answer:
The pressure that skateboard put on ground is 2 250 000 Pa
Explanation:
We have,
Force (F)=900N, Area of single wheel=0.0001m2 but skateboard has four wheels so required area=0.0001x4
P = F/A Area = 4 wheels x 0.0001 m2 = 0.0004 m2 P = 900 N / 0.0004 m2 = 2 250 000 Pa=2250 kPa
Have you ever questioned the need for such sharp knives or the pointy ends on our nails? The idea of pressure holds the answers to each of these queries. It is the ratio between the force being applied and the surface area being applied to. The force delivered perpendicularly to an object's surface per unit area across which that force is dispersed is known as pressure. The SI unit of pressure is the pascal (Pa).
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which is a major difference between what we've seen in discovered exoplanets and our own solar system?
The major difference between what we've seen in discovered exoplanets and our own solar system is that extrasolar planet orbits tend to be closer and more eccentric than in our Solar System.
Exoplanet:
Any planet outside of our solar system is an exoplanet. The majority of exoplanets orbit other stars, while rogue planets—free-floating exoplanets that are unattached to any star—orbit the galactic center.
All of the planets in our solar system orbit around the Sun. Planets that orbit around other stars are called exoplanets.
Exoplanets are very hard to see directly with telescopes. They are hidden by the bright glare of the stars they orbit.
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questions 10-11 refer to a ball that is tossed straight up from the surface of a small, spherical asteroid with no atmosphere. the ball rises to a height equal to the asteroid's radius and then falls straight down toward the surface of the asteroid. 10. what forces, if any, act on the ball while it is on the way up?
Only a decreasing gravitational force that acts downward will apply on the ball that is tossed straight up from the surface of a small, spherical asteroid with no atmosphere.
What is gravitational force?All physical things with mass are drawn to the gravitational force, which can be thought of as an attracting force. It is the known natural force that is by far the weakest.The gravitational force, which is what pushes mass-containing objects toward one another. We frequently consider the pull of gravity from the Earth. Your body is kept on the ground by this force. However, all mass-bearing objects are pulled toward each other by gravity.
Hence,
Only a decreasing gravitational force that acts downward will apply on the ball that is tossed straight up from the surface of a small, spherical asteroid with no atmosphere. The ball rises to a height equal to the asteroid's radius and then falls straight down toward the surface of the asteroid.
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what is the current through the heating element of an electric toaster oven if the heater has a resistance of 5 ohms and it is connected to 120 volts?
Answer:
24 A
Explanation:
Ohm's Law: V = IR, so I = V/R
I = 120V/5Ω = 24 A
gravel is being dumped from a conveyor belt at a rate of cubic feet per minute. it forms a pile in the shape of a right circular cone whose base diameter and height are always the same. how fast is the height of the pile increasing when the pile is feet high? recall that the volume of a right circular cone with height and radius of the base is given by .
The fast is the height of the pile increasing when the pile is feet high 0.1989 ft/min.
Calculation:
Here given the rate of change in volume DV/DT = 40 actions and we need the rate of change in height when height h = 16.
Putting all values.
40 = π/4 x (16)² x DV/DT
= DV/DT= 40 x 4/ 1×16×16
0.1989 ft/min.
Rate of change in height when height is 16 H is equal to 0.1989 ft/min.
The goal is to get a text from as many modalities as possible so that models trained on The Pile have broader generalization capabilities. For stakes, experts believe it comes from the Latin word pira. Pila loosely translates to the ball. If you've ever seen inflamed hemorrhoid, you'll understand this moniker better. Many hemorrhoids actually look like small round spheres.
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an elastic cord vibrates with a frequency of 3.0 hz when a mass of 0.60 kg is hung from it. what is its frequency if only 0.38 kg hangs from it?
The frequency of vibration of an elastic cord with a mass attached is 113.10 N/m. The frequency of the elastic cord, when a mass of 0.38 kg hangs from it, is 3.87 Hz.
Given:
Frequency = 3.0 Hz
Mass = 0.60 kg
The frequency of vibration of an elastic cord with a mass attached:
f = (1 ÷ 2π) × √(k ÷ m)
k = (2π)² × 0.60 × (3.0)²
k = 113.10 N/m
The frequency is:
f = (1 ÷ 2π) × √(k ÷ 0.38)
f = (1 ÷ 2π) × √(113.10 ÷ 0.38)
f = 3.87 Hz
So, the frequency of the elastic cord when a mass of 0.38 kg hangs from it is 3.87 Hz.
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