Heat is absorbed during the phase change, but the temperature does not change because the heat is used to "unsettle" the interparticle interactions. There is no change in the kinetic energy of the particles, and thus no change in temperature.
What is heat?The movement of kinetic energy from one media to another, or from an energy source to a medium or an object, is referred to as heat. Energy can be transferred in three ways: radiation, conduction, and convection.
The calorie (cal) is the standard unit of heat in the International System of Units (SI), and it is defined as the amount of energy transfer required to raise the temperature of one gramme of pure liquid water by one degree Celsius if the water temperature is greater than the freezing point but less than the boiling point.
Heat conduction occurs when two material medium or objects come into direct touch and one of them has a higher temperature than the other. Because temperatures tend to equalise, heat conduction consists of a transfer of kinetic energy from the warmer to the colder medium. A chilly human body being immersed in a hot bath is one example.
Convection heat arises when the motion of a liquid or gas transports energy from a warmer to a cooler zone. Convection is demonstrated by the tendency of warm air to ascend and cool air to fall, so equalising the air temperature inside a room with a hot stove.
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the internal pressure of the rock formation causes fluid to return to the surface through the wellbore. what is the fluid called
The internal pressure of the rock formation causes fluid to return to the surface through the wellbore,the fluid is called as flowback.
When the infusion interaction is finished, the internal pressure of the rock arrangement makes liquid re-visitation of the surface through the wellbore. This liquid is known as both "flowback" and "created water" and may contain the infused synthetics in addition to normally happening materials like saline solutions, metals, radionuclides, and hydrocarbons. The flowback and created water is regularly put away on location in tanks or pits before treatment, removal or reusing. Generally speaking, it is infused underground for removal. In regions where that isn't a choice, it could be dealt with and reused or handled by a wastewater treatment office and afterward released to surface water.
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as time passes, water transfers through the water cycle again and again. what happens to the total amount of water on earth?
The total amount of water vapor in the atmosphere remains approximately the same over time.
What is the Water Cycle?The water cycle shows the continuous movement of water within the Earth and atmosphere. It is a complex system that includes many different processes. Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow. Water in different phases moves through the atmosphere (transportation). Liquid water flows across land (runoff), into the ground (infiltration and percolation), and through the ground (groundwater). Groundwater moves into plants (plant uptake) and evaporates from plants into the atmosphere (transpiration). Solid ice and snow can turn directly into gas (sublimation). The opposite can also take place when water vapor becomes solid (deposition).
In conclusion, water continually evaporates, condenses, and precipitates, and on a global basis, evaporation approximately equals precipitation. Because of this equality, the total amount of water vapor in the atmosphere remains approximately the same over time.
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multiple choice
13) When coasting while roller skating, you eventually stop due to ________.
An unbalanced force of 2 newtons applied to a given mass produces an acceleration. If an unbalanced force of 1 newton is applied to the same mass, the acceleration produced will be.
If an unbalanced force of 1 newton is applied to the same mass, the acceleration produced will be twice as much.
What does acceleration mean?The rate at which velocity varies with respect to time is referred to as acceleration. Since acceleration has both a magnitude and a direction, it is a vector quantity. Additionally, it is the first derivative of velocity with respect to time or the second derivative of position with respect to time.
What exactly does force mean?If there is no opposition, it may be described as an interaction that modifies an object's motion. However, the straightforward definition of force is the push or pull that an item experiences. Force has both a magnitude and a direction since it is a vector quantity.
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in a closed system, an object with a mass of 10 kg moves at a velocity of 5.4 m/s. it collides with a second object that has a mass of 12 kg and that is moving in the opposite direction with a velocity of 3.5 m/s. what is the total momentum of the system after the collision?
Answer:
12 kg·m/s
Explanation:
This is a conservation of momentum problem. Total momentum (p=mv) before the collision must equal total momentum after the collision.
1st object moves in positive direction, 2nd moves in negative direction.
p(before) = (10 kg)(5.4 m/s) - (12 kg)(3.5 m/s) = p (after)
p(after) = 54 kg·m/s - 42 kg·m/s = 12 kg·m/s
Between which two points on the heating curve is the substance melting
The Curve horizontal or plateaued lines represent the change in the sample's states. The first plateau is a symbol of melting and the second one is a symbol of boiling (or transition from liquid to gas).
What does a heating curve's melting point represent?Phase changes are another name for the plateaus. Melting is the initial state shift (section BC) (changing from a solid to a liquid). While a substance melts, the temperature remains constant. This temperature is 0°C for water as that is also its melting point.
What does a substance's heating curve look like?A heating curve is a plot or graph that charts the increase in temperature of a substance over time to determine
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a 6.2 kg object heading north at 3.0 m/s collides with an 8.0 kg object heading west at 3.5 m/s. if these two masses stick together upon collision, what is their velocity after collision?
The velocity of both objetcs after the collision is 3.07m/sec if both object masses are 6.2 kg and 8.0kg respectively.
To find the velocity of both objects we need to conserve the momentum. We need to follow the law of conservation of momentum which states that initial momentum is equal to final momentum.
Now, we know that momentum =mass × velocity
So, initial momentum of first object=6.2×3=18.6Kg-m/sec
Similarly, initial momentum of second object=8×3.5=28.0kg-m/sec
Now, it is given that both object stick together, so total mass of both objects are=(6.2+8)=14.2kg
Now, both objects are moving with common velocity, so assume both have velocity v
=>So, final momentum of both objects is =14.2×v
according to law of conservation of momentum
=>18.6+25=14.2v
=>43.6=14.2v
=>v=43.6/14.2
=>v=3.07m/sec
Hence, final velocity of objects are 3.07m/sec.
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A fast ride at Six Flags makes a circular loop. If the tangential speed of the cart as it moves around the loop is 10 m/s, and the radius of the loop is 5 m, what is the centripetal acceleration of the cart as it moves around the loop?
The centripetal acceleration of the Cart is 20 m/s2.
What is centripetal acceleration?Centripetal acceleration is a change in velocity that points toward the center of a circular path. It is the acceleration an object experiences when its velocity changes direction, but its speed remains constant. It is always directed toward the center of the circle and is caused by a force, such as gravity or friction. The magnitude of the centripetal acceleration is equal to the square of the object's velocity divided by the radius of the circle. Examples of centripetal acceleration include the motion of a satellite orbiting the Earth, a car rounding a curve, and a roller coaster car making a loop.
Given that,
Speed of the Cart = 10m/s
Radius of the loop = 5m
We know that the acceleration of the car can be computed as follows:
a = v2/R
a = (10.0 m/s)2/(5.0 m)
a = 20.0 m/s2
Thus, the centripetal acceleration of the Cart is 20 m/s2
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what initial mass of uranium would have to undergo fission to supply the electrical needs of sich a house for a year
About 0.1% of the initial mass of 92U235 is transformed into energy during fission. The quantity of 92U235 that must fission each day in a nuclear reactor for it to produce 200 megawatts of electricity is then: Q.
What occurs when nuclear fission of uranium produces electricity?A neutron divides a uranium atom when it interacts with it during nuclear fission, releasing a significant quantity of energy in the form of heat and radiation. When a uranium atom divides, additional neutrons are also emitted. The process keeps repeating again as these neutrons keep crashing into more uranium atoms.
It is possible to utilize the energy created by the fission of uranium or plutonium to create electricity, power spacecraft, and more.
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a spring is stretched from 0.500 m to 0.800 m. assume the unstretched position is 0.00 m. if the spring constant of the spring is 10.0 n/m, what is the work done on the spring?
Answer:
.45 J
Explanation:
The work is also equal to the EPE of the spring and is given by
1/2 k x^2
= 1/2 ( 10 n/m) (.8-.5)^2 = .45 J
9. A piece of iron with a mass of 9.8 g has an initial temperature of 32.6°C. As it is heated, it absorbs 365J of energy. What is the final temperature of the iron? (The specific heat of iron is .46 J/g °C)
The final temperature of the piece of iron with the mass of 9.8 grams on the absorption of 365J of energy is 113.56°C.
What is Specific heat capacity?
The specific heat capacity of a material can be defined as the quantity of heat energy (J) which is absorbed per unit mass (kg) of the material when its temperature is increased by 1 K (or 1 °C). The SI unit of specific heat capacity is J/(kg K) or J/(kg °C).
The specific heat capacity of a material can be calculated by the formula:
Q = m × c × ΔT
where, Q = heat energy,
m = mass of the material,
c = specific heat capacity,
ΔT = change in temperature
The final temperature of the piece of iron can be calculated by the formula:
Q = m × c × ΔT
ΔT = (Final temperature - initial temperature)
365J = 9.8 × 0.46 × ΔT
365J = 4.508 × ΔT
ΔT = 80.96
ΔT = Final temperature = initial temperature
ΔT = (T - 32.6)
80.96 = (T - 32.6)
T = 80.96 + 32.6
T = 113.56°C
Therefore, the final temperature of the piece of iron is 113.56°C.
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Can someone please help me with this calculation? It's a bit confusing for me.
You are calculating the average speed, velocity, and acceleration of a toy car.
I'm not sure what the speed of the toy car was or the acceleration. I only have the times of the meters.
first meter: 2.00, second meter: 4.00, third meter: 6.20, fourth meter: 8.01, fifth meter: 10:13, sixth meter: 12:13, seventh meter: 14:13, eighth meter: 16:14, ninth meter 18:18 and tenth meter: 20:00.
Answer the following questions.
Did the car travel at a constant speed? (Hint: you must calculate the speed at every meter)
What was the average speed of the car?
Describe the overall motion of the car.
What are some practical applications for determining the motion of an object?
Answer: See Explanation
Explanation:
Did the car travel at a constant speed?
This means "Is the speed at each interval the same?"
There are 10 intervals for which to calculate from.
For each one, the speed is the distance traveled divided by the time.
Each interval is 1 meter long (distance).
1st: 1 meter / 2.00 s = 0.5 m/s
2nd: 1 meter / (4.00 - 2.00) s = 0.5 m/s
3rd: 1 meter / (6.2 - 4.0) s = 0.454 m/s
Right here you can see that the speed is different, NO is the answer.
Average Speed = total distance divided by total time
v = d / t v = (10 m) / (20:00 s) = 0.5 (m/s)
Describe the overall motion: (continue on with step one to see the total motion over the 10 meters)
4th: 0.552
5th: 0.472
6th: 0.5
7th: 0.5
8th: 0.4975
9th: 5.39
10th: 0.55
Overall motion stayed steady from 0-2 meters, slowed for the 3rd meter, sped up for the 4th, slowed down the 5th, stayed steady until slowing down in the 8th meter, then increased speed til the 10th meter.
Races would be practical applications to see where people/cars pace themselves, push themselves, etc.
do i need to adjust the tension on my elna super sewing machine when using denim fabric and 100/16 needles?
A tension of 3.5 to 4.5 is advised when sewing tough fabric, such denim or leather. This allows you to effortlessly maintain neatness across the fabric when sewing through it. Before starting to sew any thick material, check the attachments on your sewing machine and adjust the tension.
Depending on the thickness of the denim, I use a straight-stitch length between 3.0 mm and 4.0 mm. I also increase the tension on my machine to 4.6 (up from 4.0 for lightweight woven fabrics). If my denim has spandex in it, I use a stretch stitch, such as a narrow zigzag.
Linen, cotton and denim: These fabrics hold wrinkles well, so they require the highest heat, from 150 to 200 degrees. If needed, you may also use steam or spray water from a bottle or your iron.
The longer the stitch length, the easier and faster it will be to pull the fabric along the gathering threads. However, the shorter the stitch length, the easier it will be to achieve even gathers. We find a 4.5 mm setting to be a good compromise, but it's always a good idea to test and see what you prefer.
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11. Mac and Tosh are arguing in the cafeteria. Mac says that if he flings the Jell-O with a
greater speed it will have a greater inertia. Tosh argues that inertia does not depend
upon speed, but rather upon mass. Who do you agree with? Explain why.
I agree with Tosh because inertia depends on mass. So Mac is wrong.
What is Newton's first law of motion?Newton's first law of motion states that an object at rest or uniform motion in a straight line will continue in that path unless acted upon by an external force.
Newton's first law of motion is also called the law of inertia because it depends on the mass of the object.
Inertia is the reluctance of an object at rest to start moving or the relictance of an object in motion to stop moving. The greater the mass of an object, the greater the inertia of the object.
Thus, Mac is wrong while Tosh is right because inertia does not depend on the speed of an object rather, it depends on the mass of the object.
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a motorcyclist moves at a constant speed down one hill and up another hill along the smooth curved surface. when the motorcyclist reaches the lowest point of the curve its velocity and acceleration directions are: (a) (b) (c) (d) 5. a car moves along the curved track. what is the apparent weight of the driver when the car reaches the lowest point of
At the lowest point of the curve, the motorcyclist's velocity would be tangential to the curve.
Motorcyclists' velocity would be parallel to the surface of the road. The acceleration of the motorcyclist would be directed opposite the direction of the velocity, meaning it would be directed uphill.
At the lowest point of the curve, the direction of the net force on the driver, Fn, would be directed towards the center of the curve. This is because the velocity of the driver is tangential to the curve, and the centripetal force is directed toward the center of the curve to provide the necessary acceleration to keep the driver on the curve.
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when you look at a single slit diffraction pattern produced on a screen by light of a single wavelength, you see a bright central maximum and a number of maxima on either side, their intensity decreasing with distance from the central maximum. if the wavelength of the light is increased:_____.
The pattern gets bigger as the light wave length gets longer. other maxima are further from the central one and are wider.
What wavelength does it have?A wavelength is the distance between two identical locations (adjacent crests) in successive cycles in a waveform signals that is transmitted by a wire or in space. Typically, this length is expressed in feet (m), millimeters (cm), or millimeters (mm) in wireless systems (mm).
What do wavelengths and frequencies refer to?The distance that separates two wave crests is known as the wavelength, and it also applies to troughs. The number of vibrations that pass across a certain area in a second, or 60hz (Hz), is the unit of measurement for frequency (Hertz).
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Which of the following would be a question that would allow a student to determine if a wave was a mechanical wave or an
electromagnetic wave?
A) Does the wave travel at different speeds in different materials?
B) Does the wave have compressions and rarefactions?
C) Does the wave transmit energy?
D) Does the wave have a frequency?
The question that would allow a student to determine if a wave was an
electromagnetic wave are:
Does the wave travel at different speeds in different materials?Does the wave transmit energy?Option A and C are the correct options.
The question that would allow a student to determine if a wave was an
mechanical waves are:
Does the wave have a frequency?Does the wave have compressions and rarefactions?Option B and D are the correct options.
What is Mechanical wave?This refers to a wave that has the ability to transmit its energy through a vacuum. Mechanical waves need a medium in order to send their energy from one location to another. An example of a mechanical wave is sound wave.
What is electromagnetic wave (EM)?This refers to waves that are made as a result of vibrations between an electric field and a magnetic field. Electromagnetic waves are made up of oscillating magnetic and electric fields.
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how does transfer of thermal energy by radiation differ from convection and conduction?how does transfer of thermal energy by radiation differ from convection and conduction?
In conduction, heat is transferred when two objects are brought into close proximity. Heat is transferred within the fluid when convection takes place. Heat is transferred through electromagnetic waves without the use of particles in a process known as radiation. Heat transfer occurs because of the temperature difference.
How is radiation used to transfer thermal energy?Heat is transferred via electromagnetic energy in a process known as radiation. When we sit close to a heater in the winter, radiation from the heater spreads electromagnetic energy across our bodies. Because electromagnetic waves are emitted by hot objects like heaters and do not require a medium to travel through.
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Which one of the following statements about the movement of an object with zero acceleration is true?
A) The object must be at rest.
B) The object may be slowing down.
C) The object may be in motion.
D) The object may be speeding up
Statements about with an item moving with zero acceleration have been in motion are true.
What is an explain acceleration?The ratio at which the pattern and rate of speed change over time is referred to as acceleration. When something moves faster or slower, it is considered to be accelerating. Travel on a loop accelerates even at modest speeds since the orientation is constantly changing.
What are the three types of acceleration?Uniform distribution accelerating, non-uniform kinetic, and average acceleration are the three primary forms of accelerating motions. Uniform acceleration describes a behavior in which an object follows a straight path while accelerating gradually over time.
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find the maximum transverse speed of a point on the string. (f) what would be the equation y1x, t2 for this string if it were vibrating in its eighth harmonic?
In a one-dimensional string, a harmonic wave has a maximum transverse velocity and maximum transverse acceleration of 1ms-1 and 1ms-2, respectively.
What is maximum transverse speed of a point on the string?We have attached a harmonic wave with a frequency of 80 Hodge to the string. Additionally, a positive extraction travels at a speed of 12 m/s with an amplitude of 0.025 m. Next, we must create a proper wave function for this wave in the first. In light of this.
we have established that the frequency F is the hurt amplitude is 0.025 m, and the speed is 12 m/s. As a result, given that we are aware of the wave function's writing, we may determine whether or not the sign K x minus omega T applies. Omega, which equals two pi into, is the angular frequency in this case. Thus, we can say that this word has been introduced. 80 is to be purchased That makes 160 by, too.
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if 8 different amplitudes are used, how many bits can be transmitted with each amplitude change? if 16 different frequencies are used, how many bits can be transmitted with each frequency change?
With each amplitude change, 3 bits can be broadcast across 8 frequencies, including 000,001,010,011 and 100,101,110,111.
What function does amplitude serve?With the use of group analytics, Amplitude, a platform of product analytics, enables businesses to track visitor activity. The platform uses behavioral reports to understand how people interact with products and provides insights to accelerate work in real-time.
What is an illustration of amplitude?It refers to the greatest departure an item in periodic motion can make from equilibrium. As an illustration, consider a pendulum that swings through its market equilibrium (straight down), then swings to the furthest point from the center.
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what percentage of the radiation to which we are exposed is due to medical and dental x-rays? what percentage of the radiation to which we are exposed is due to medical and dental x-rays? 35 percent
13 percent of the radiation to which we are exposed is due to medical and dental x-rays.
By and large, your body is presented to 3.1 millisieverts (mSv) of regular radiation alone each year. At . 005 mSv, or less than 1.6% of your daily background radiation exposure, the radiation from the aforementioned dental x-ray. Every day, you only get the same amount of radiation from the sun. Another factor in the risk of cancer from radiation exposure is that each x-ray is a one-time dose rather than continuous exposure. The risk of dying from cancer is only 1 in 2,000 with x-rays; Compare this to your natural chance of dying from cancer, which is one in five.
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let's say you see a comet's nebulous (meaning `cloudy-looking') tail stretching across the sky, and it's several million kilometers long. how big is the solid object that has developed this tail, and what's it made of?
The solid object that created the comet's nebulous tail is likely the nucleus of the comet, which is typically made of ice, dust, and rocky material.
What is comet?Comet is a web application development technique that enables web applications to send and receive data from a server asynchronously without the need for a browser page refresh. It creates an interactive user experience by enabling a continuous connection between the client and server so that data can be exchanged in both directions. This type of communication is also known as a bi-directional, full-duplex connection. Comet is an umbrella term for several techniques for achieving this kind of communication.
The nucleus of a comet can range in size from a few hundred meters to tens of kilometers, though their average size is typically around 5 kilometers. As the comet approaches the Sun, its frozen material turns to gas, which is pushed away from the Sun by the solar wind and forms the nebulous tail that stretches millions of kilometers across the sky.
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Use Newton's first law to explain how a seat belt helps protect you in a crash. Determine strength and speed.
Seat belts protects us from tumbling around inside the car if there is a collision. The seat belts lock in place when it sense a collision .
So Newton's first law is applied when the car crashes, and there is no unbalanced force acting on the person, so they continue forward.
The individual motion is against the seat belt, exerting a force on it.
Speed is the rate of change of position of an object in any direction.
Strength is described as the quality or state of being strong having the capacity for exertion or endurance.
State Newton's first law?Newton's first law sates that an object at rest remains at rest, or if in motion, remains in motion at a constant velocity unless acted on by a net external force.
So, we have it that Newtons first law of motion explains what happens in a car crash in the sense that it basically states that the passenger will continue to travel at the same velocity until an unbalanced force acts on the individual.
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how fast would she have to be running for her race to appear to her to be only 91 yd long? give your answer in terms of c.
1.81*10^8m/s is the speed with which she have to be running for her 100m race to appear to be only 91 yard long.
What is the Speed?The rate at which an object's location changes in any direction is what is known as speed. The distance traveled in relation to the time it took to travel that distance is how speed is defined. The Speed just has a direction and does not have magnitude hence, speed is a scalar quantity.Solution:Given:
Race length=100M=L
she has to appear=91yd
to find this we need to
[tex]L_{o}[/tex]=100M
1 yard =0.9144 meter
hence, L=91yard*0.9144/1
[tex]L_{o[/tex]=83.2104m
now do as follows:
L=[tex]L_{o}[/tex][tex]\sqrt{1-\frac{v^{2} }{c^{2} } }[/tex]
Solving the equation we get
v=2*9.88^8*[tex]\sqrt{\frac{83.21^{2} }{100^{2} } }[/tex]
v=1.81*10^8m/s
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The complete question is:
How fast would she have to be running for her 100m race to appear to be only 91 yard long? give your answer in terms of c.
imagine that five 10.0-ohm resistors are connected in parallel. what is the effective resistance of this combination of resistors?
The effective resistance of five 10.0-ohm resistors is
Resistance is property of a material to measure the amount of restriction provided to the charge particles during the current flow.
Its SI unit is ohm, represented by a Greek symbol 'Ω'.According to the Ohm's law, resistance can be defined as the ratio of voltage to the current supplied in the circuit.Mathematically R = (V/I)R1 = 10 Ohms
R2 = 10 Ohms
R3= 10 Ohms
R4 = 10 Ohms
R5 = 10 Ohms
Re = Effective Resistance = ?
Since they are in parallel connections, the equivalent resistance (Re) can be calculated as follows :
1/Re = 1/R1 + 1/R2 + 1/R3 + 1/R4 + 1/R5
1/Re = 1/10 + 1/10 + 1/10 + 1/10 + 1/10
1/Re = ( 1+1+1+1+1)/10
1/Re = 5/10
1/Re = 1/2
Cross multiply to express in linear form
Re = 0.5 ohms
Therefore the equivalent resistance of this combination of resistors is 0.5 ohms.
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a system releases heat to the surroundings and no work is done on or by the system. what are the signs of qsystem and wsystem?
Heat that is emitted into the environment is harmful. The system's work output is zero.
The movement of mechanical energy from one item to another is referred to as work. Work is measured in the same units as energy since it is a movement of energy: joules (J). The total energy of an object will change as a force is applied to it across a distance. The object's kinetic energy will vary as a result of either acceleration or deceleration. Its potential energy will change, for instance, if it is raised up to a given height while being pulled by gravity.
Hence, sign are used based on the release and absorbed.
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Three point charges are arranged in a straight line. The point charges are q1 = 10.0 μC, q2 = –40.0 μC, and q3 = –30.0 μC. Charge q1 is 10.0 cm from charge q2, and charge q3 is 20.0 cm from charge q2. Determine the magnitude of the net electric force on charge q1.
Let us find first the forces at 1, 2 & 3 points.
We know that ke= 8.99 * 109N.m2 / C2
The forces are: -
F1 = keq1q2 / r212 = {8.99 * 109N.m2 / C2} * {10 * 10-6 C} * {40 * 10-6 C} / {10 * 10-2 m}2
F1 = 359.6 N
F2 =keq1q3 / r213 = {8.99 * 109N.m2 / C2} * {10 * 10-6 C} * {30 * 10-6 C} / {30 * 10-2 m}2
F2 = 29.96 N
F3 = keq2q3 / r213 = {8.99 * 109N.m2 / C2} * {40 * 10-6 C} * {30 * 10-6 C} / {20 * 10-2 m}2
F3 = 269.7 N
Now,
The net force on q1 is F1 – F2,
i.e. F1 + F2 = 359.6 + 29.96
F(q1) = 389.56 N to the left
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A student is investigating inertia and acceleration. The data the student collects is shown in the table.
Force (N) Mass (kg) Acceleration (m/s²)
10
10
20
20
1
2
1
2
b
Oc
Od
Assuming the force acting on the objects is constant, which claim about inertia and acceleration is supported by the data?
0.1
0.2
Next Page
0.05
0.1
An object with a lower mass has less inertia which causes it to speed up less quickly.
An object with a higher mass has more inertia which causes it to speed up less quickly.
An object with a higher mass has less inertia which causes it to speed up more quickly.
An object with a lower mass has more inertia which causes it to speed up more quickly.
Back
Assuming the force acting on the objects is constant, a claim about inertia and acceleration which is supported by the data include the following: B. An object with a higher mass has more inertia which causes it to speed up less quickly.
What is Newton's First Law (Inertia)?Newton's First Law of Motion is also referred to as Law of Inertia and it states that an object in motion would continue in its state of motion at continuous velocity (same speed and direction) or if at rest, it will remain at rest unless it is acted upon by an external force.
This ultimately implies that, the amount of net force keeping a physical object moving at a constant speed and in a specific direction is always equal to zero (0) newton in accordance with Newton's First Law of Motion.
In this context, we can reasonably infer and logically deduce that a physical object that has a higher mass would have more inertia, which causes it to either experience a slower motion or speed up less quickly.
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Answer: its c
Explanation: i took the test
sir lancelot, who weighs 800 n, is assaulting a castle by climbing a uniform ladder that is 5.0 m long and weighs 180 n. the bottom of the ladder rests on a ledge and leans across the moat in equilibrium against a frictionless, vertical castle wall. the ladder makes an angle of 53.1 deg with the horizontal. lancelot pauses one third of the way up the ladder. (a) find the normal force and friction forces on the base of the ladder. (b) find the minimum coefficient of static friction needed to prevent slipping at the base. (c) find the magnitude and direction of the contact force on the base of the ladder. (that is, the vector sum of the forces at the base.)
(a) The normal force is 267.7 N and frictional force is 980 N.
(b) The minimum coefficient of static friction is 0.27, which is needed to prevent slipping at the base.
(c) The direction of the contact force is 1016 N.
∈(t) = 0
N₂ ( L sinθ ) = 800 ( [tex]\frac{L}{3}[/tex] cosθ )
N₂ = 267.7 N
(a) Normal force F(d) = N₂ = 267.7 N
Frictional force N = 800 + 180
N = 980 N
(b) The minimum coefficient of static friction,
F(d) = μ N₁
μ = F / N₁
μ = 267.7 / 980
μ = 0.27
(c) The direction of the contact force,
R = [tex]\sqrt{(980)^{2} + (267.7)^{2} }[/tex]
R = 1016 N
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