two charges q1 is 50mc and q2 is 10mc are located at -1,1,-3and3, 1, 0respectively find the force on q1

Explanation:

Momentum = mv     so the most likely way to increase an object's momentum would be to increase its velocity

Answer: 1st one: chemical to mechanical to electrical to thermal

2nd: hydroelectric, 3rd: gravity

Answer:

False. Adult brains are capable of neurogenesis, which is the process of generating new neurons (nerve cells) in the brain. Although it was previously believed that neurogenesis only occurred during early development, research has shown that certain regions of the brain, such as the hippocampus, continue to produce new neurons throughout adulthood. However, the rate of neurogenesis in adults is much lower than in developing brains

EX :SOMEONE FATHER TODAY YOUR FATHER DOES,T KNOW ABOUT TECH OR ANY SAMRT APPS BUT HE KNOW BETTER N HIS GENRATON

Answer: simple harmonic motion

Simple harmonic motion. At the instant the spring is no longer compressed(equilibrium), all of our spring potential energy(kx^2/2) has been converted to kinetic energy(mv^2/2). All you have to do is find what your spring potential energy is when the spring is compressed using the spring constant(150N/m) and the distance it's compressed(30cm), use that as your kinetic energy, and solve for the velocity since you already know the mass.

Using the triangle of forces to get the system of the forces;

If three forces acting on a body are in equilibrium, then they can be represented in magnitude and direction by the three sides of a triangle taken in order.

In other words, the three forces can be drawn as vectors, and these vectors can be arranged to form a closed triangle.

We know that we have the other end of the triangle to be;

100 Kg * 10 m/s^2 = 1000 N

The missing angle is;

180 - (30 + 60)

= 90 degrees

Thus;

1000/Sin 90 = T1/Sin 60

T1 = 100 Sin 60/Sin 90

T1 = 866/1

T1 = 866 N

1000/Sin 90 = T2/Sin 30

T2 = 1000 Sin 30/Sin 90

T2 = 500 N

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The potential difference across C4 can be found using the equation V = V4 - V3. Using the given values, V = 12.0V, C1 = 3.0 ?F, C2 = 2.0 ?F, C3 = 2.0 ?F, C4 = 1.0 ?F, and C5 = 4.0 ?F, we can solve for V4.

V4 = 12.0V + (3.0 ?F + 2.0 ?F + 2.0 ?F + 1.0 ?F) / (1.0 ?F + 4.0 ?F)
V4 = 12.0V + (8.0 ?F / 5.0 ?F)
V4 = 12.0V + 1.6V
V4 = 13.6V
Therefore, the potential difference across C4 is 13.6V - 12.0V = 1.6V.
The potential difference across C4 can be determined using the formula Q = CV. Where Q represents the charge stored in the capacitor, C represents capacitance, and V represents the potential difference across the capacitorTo determine the potential difference across C4, we can use the formula Q = CV. To determine Q, we need to determine the equivalent capacitance of the circuit.

The equivalent capacitance of capacitors in parallel is equal to the sum of their capacitance. The equivalent capacitance of capacitors in series is equal to the reciprocal of the sum of their reciprocals.C1, C2, and C3 are in series, and their equivalent capacitance is given by:C_eq1=1/((1/C1)+(1/C2)+(1/C3))=1/(1/3+1/2+1/2)=3/7 μF{C_eq1=1/((1/C1)+(1/C2)+(1/C3))=1/(1/3+1/2+1/2)=3/7μF}C_eq2 is the equivalent capacitance of C4 and C5 in parallel.C_eq2=C4+C5=1+4=5μF {C_eq2=C4+C5=1+4=5μF}

Now we can determine the equivalent capacitance of the entire circuit.C_eq=C_eq1+C_eq2=3/7+5=38/7μF{C_eq=C_eq1+C_eq2=3/7+5=38/7μF}Now, we can determine the charge stored in the circuit.Q=C_eqV=38/7*12= 65.14μC{Q=C_eqV=38/7*12=65.14μC}To determine the potential difference across C4, we can use the formula Q = CV.V=C4Q/C4= 65.14/1 = 65.14V{V=C4Q/C4=65.14/1=65.14V}Therefore, the potential difference across C4 is 65.14 V.

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If pulse 1 is reflected from a wall, pattern 2 would represent the reflected pulse. This is because when a wave is reflected from a fixed end, its amplitude is inverted. So, pattern 2 represents the reflection of pulse 1 from a fixed end.

A pulse is a short burst of energy that travels through space or matter. These bursts of energy can come in many different forms, including sound waves, light waves, and even electromagnetic radiation. In the context of waves, a pulse refers to a single disturbance that propagates through a medium. The reflection of waves refers to the behavior of waves that encounter a barrier or a discontinuity in a medium that causes them to return to their original medium. When waves are reflected, their direction of motion changes, and they experience a change in amplitude, phase, and polarization.

The amplitude of the reflected wave is related to the amplitude of the incident wave, as well as to the reflectivity of the medium. The reflection of waves is an essential phenomenon in many fields of science and engineering. For example, it is essential in optics, where it is used to form images in mirrors and lenses. It is also important in acoustics, where it is used to analyze the characteristics of sound waves. In addition, the reflection of waves is a critical aspect of the design of structures such as bridges and buildings, where it can help to reduce the impact of seismic waves during an earthquake.

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If nothing were done to modify the orbit, the speed of the space-shuttle orbiter at the perigee P would be approximately 17085 mi/hr

We can use the principle of conservation of energy to determine the speed of the space-shuttle orbiter at the perigee P.

At the apogee point A, the potential energy of the space-shuttle orbiter is at a maximum, while its kinetic energy is at a minimum. Conversely, at the perigee point P, the kinetic energy is at a maximum, while the potential energy is at a minimum.

The potential energy of the space-shuttle orbiter at any point in its orbit can be calculated as:

U = - G M m / r

where;

The kinetic energy of the orbiter can be calculated as:

K = (1/2) m v^2

where;

Since the sum of the kinetic energy and potential energy remains constant throughout the orbit, we can set the total energy E equal to the sum of the kinetic and potential energies at the apogee point A:

E = U(A) + K(A)

At the perigee point P, the total energy is the same, so we can write:

E = U(P) + K(P)

Equating these two expressions for E, we get:

U(A) + K(A) = U(P) + K(P)

Substituting the expressions for potential and kinetic energy, we get:

G M m / r(A) + (1/2) m v(A)² = - G M m / r(P) + (1/2) m v(P)²

Canceling out the mass of the orbiter and multiplying both sides by -1, we get:

G M / r(A) - (1/2) v(A)² = G M / r(P) - (1/2) v(P)²

Solving for v(P), we get:

v(P) = √[2 G M / r(P) - (1/2) v(A)² + 2 G M / r(A)]

Now we can substitute the given values and solve for v(P):

v(A) = 17246 mi/hr

r(A) = 3959 + 153 = 4112 mi

r(P) = 3959 + 42 = 4001 mi

G M = 1.327 × 10^11 m^3/s^2

Converting units to SI, we get:

v(A) = 7742.6 m/s

r(A) = 6617.6 km

r(P) = 6400.2 km

G M = 3.986 × 10¹⁴ m³/s²

Substituting these values, we get:

v(P) = √[2 (3.986 × 10¹⁴) / (6400.2 × 1000) - (1/2) (7742.6)² + 2 (3.986 × 10¹⁴) / (6617.6 × 1000)]

= 7640.7 m/s

Converting back to miles per hour, we get:

v(P) = 17085 mi/hr (rounded to the nearest mile per hour)

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Answer:

Explanation:

The work-energy theorem states that the net work done on an object is equal to its change in kinetic energy. Therefore, we can use this theorem to calculate the final kinetic energy of the ball in each case.

We know that the work done by a constant force is given by the equation W = Fd cos(theta), where F is the magnitude of the force, d is the displacement of the ball, and theta is the angle between the force and displacement vectors.

Using the work-energy theorem, we can write:

W = ΔK = Kf - Ki

where ΔK is the change in kinetic energy, Kf is the final kinetic energy, and Ki is the initial kinetic energy.

We can rearrange this equation to solve for Kf:

Kf = Ki + W = Ki + Fd cos(theta)

a) Kf = 150 J + (10 N)(15 m)cos(90°) = 150 J

b) Kf = 300 J + (200 N)(1.5 m)cos(180°) = 0 J

c) Kf = 200 J + (25 N)(4 m)cos(0°) = 300 J

d) Kf = 450 J + (15 N)(30 m)cos(150°) = 112.5 J

Ranking from greatest to least final kinetic energy:

c) Ki=200J F=25N d=4m theta=0 degrees

a) Ki=150J F=10N d=15m theta=90 degrees

d) Ki=450J F=15N d=30m theta=150 degrees​

b) Ki=300J F=200N d=1.5m theta=180 degrees

The force needed to pull the cup of the slingshot 4.2 cm from its equilibrium position is 2667N/m.

From the Hook's law, the spring constant may be expressed as follows:

k=F / x

wherein F=32N is the elastic pressure (which is identical to the applied one if rubber bands do no longer flow after stretching), and x=1.2cm=0.012m is the elongation of the bands.

k= 32N / 0.012m ≈ 2667N/m

A slingshot is a handheld projectile weapon that uses elastic materials, such as rubber bands or natural fibers, to propel small projectiles. It consists of a Y-shaped frame with two rubber bands attached to the forks of the frame. The user stretches the bands back with their fingers, placing a projectile such as a small rock or ball in a pouch or cradle, and then releases the bands to launch the projectile.

Slingshots have been used for hunting and recreation for thousands of years, and are still popular today. They are relatively inexpensive and easy to make, and can be used for target shooting, small game hunting, and even self-defense in some situations.

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Answer:

Explanation:

You want the voltages in each circuit, and also the currents in the second circuit.

In this series circuit, the voltage is divided in proportion to the resistance.

  v1 = 2/5(20V) = 8V

  v2 = 3/5(20V) = 12V

The sum of voltages around a loop is 0, so we can write the equations ...

  2·i1 +8·i2 = 10

  8·i2 -4·i3 = 6

  i1 -i2 -i3 = 0

The attachment shows the calculation of the currents. Those are used to find the corresponding voltages.

  (i1, i2, i3) = (9/7, 13/14, 5/14)A

  (v1, v2, v3) = (18/7, 52/7, 10/7)V

__

Additional comment

A T-circuit as in figure 2 can usually be solved handily by making use of Norton's equivalents for the sources. The left source can be replaced by a 5A current source in parallel with 2Ω. The right source can be replaced by a 1.5A current source in parallel with 4Ω. Then the circuit degenerates to a 6.5A source in parallel with 8/(4+1+2) = 8/7Ω. So, the voltage v2 is ...

  v2 = (6.5A)(8/7Ω) = 52/7V

Then {v1, -v3} = {10, 6} -v2  ⇒  (v1, v3) = (18/7, 10/7)

The currents are found by dividing the voltage by the resistance:

  {i1, i2, i3} = {18/7, 52/7, 10/7}÷{2, 8, 4} = (9/7, 13/14, 5/14) . . . . as above

Note that these calculations can all be done without the aid of calculator.

Parallel resistors that are multiples of one another can be thought of as some number of resistors in parallel. Here, the 2Ω resistor can be thought of as 4 8Ω resistors in parallel. Similarly, the 4Ω resistor is effectively 2 8Ω resistors in parallel. Thus the parallel combination of 2Ω, 8Ω, and 4Ω is effectively 4+1+2 = 7 8Ω resistors in parallel, or 8/7Ω. No calculator required.

Answer:

Explanation:

To find the net electric flux through a closed surface, we need to apply Gauss's law:

Phi_E = Q_enclosed / epsilon_0

where Phi_E is the electric flux, Q_enclosed is the net charge enclosed by the closed surface, and epsilon_0 is the electric constant.

Let's consider a spherical closed surface of radius R enclosing the charges. We can divide the surface into two regions: inside and outside the sphere.

For the charges inside the sphere, the net charge enclosed is:

Q_enclosed = +1.00 nC - 3.00 nC = -2.00 nC

Therefore, the electric flux through the inner surface of the sphere is:

Phi_E_inside = Q_enclosed / epsilon_0 = (-2.00 nC) / epsilon_0

For the charge outside the sphere, the net charge enclosed is:

Q_enclosed = +2.00 nC

Therefore, the electric flux through the outer surface of the sphere is:

Phi_E_outside = Q_enclosed / epsilon_0 = (2.00 nC) / epsilon_0

The net electric flux through the closed surface is the sum of the electric flux through the inner and outer surfaces:

Phi_E_net = Phi_E_inside + Phi_E_outside = (-2.00 nC) / epsilon_0 + (2.00 nC) / epsilon_0

= 0

Therefore, the net electric flux through the closed surface is zero. This means that the total amount of electric field lines entering the surface is equal to the total amount of electric field lines leaving the surface. This result is consistent with Gauss's law, which states that the net electric flux through a closed surface is proportional to the net charge enclosed by the surface. In this case, since the net charge enclosed is zero, the net electric flux is also zero.

m=55.0 D=820 so were are looking for the velocity ? v= m\d V = 55.0*820 =45100 ...

The Delta t and Delta x between the events E1 and E2 in the frames of A, B, and C, and show that c2 Delta t2 - Delta x2 is the same in all three frames. The Space time interval in all frames is [tex]\frac{144}{25}L^2[/tex].

In the following we will find out the time interval and space interval between the two events E1 and E2 with respective to  A, B and C.

Simultaneously we will find out space time interval in each case and finally show that they are the same.



In the frame of reference of C

The time interval is the time it takes for ( to Cover the contracted length of B.

with respect to C, B will have a relative velocity Ux' = (-5/13)C  (we had already found out it.Only the sign changes)

Then the contrasted length of B with respect to C.

would be L' =  [tex]L\sqrt{1 - \frac{Ux^2}{C^2}} = L\sqrt{1 - \frac{25}{169}}[/tex]

L' = (12/13)L

So dt = L'/un\x' =(12/13)L / (-5/13)C = (12/5)(L/C)

dx =0 as E1, and E2 occurs at the same point with respect to C. Now space time Interval is Cdt^2 = dx^2 =

[tex]C^2 \frac{144}{25}\frac{L^2}{C^2}-0 = \frac{144}{25}L^2[/tex]

The quantity of time between two given instances is referred to as time interval. In other words, it is the amount of time that has surpassed among the beginning and end of the event. it is also called elapsed time. interval of time is measured in special units. every unit describes a one of a kind quantity of time. some units are better appropriate to specific durations of time.

As an instance, if you were baking a cake within the oven, you will select to measure the time in minutes or perhaps in hours. in case you were calculating the time on your birthday from a particular date, you will choose to measure the time in days, weeks, or months (relying on how far away it became).

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Newton's second law of motion is the fundamental law of motion in classical mechanics.

The data points will fall along a line. This shows that as the force increases, the acceleration increases.

A group of students conduct an experiment to study Newton's second law of motion. They applied a force to a toy car and measure its acceleration.

The Force (N) and Acceleration (m/s²) measurement of the group of students, as seen in the table, is given as 2.0 and 5.0, 3.0 and 7.5, and 6.0 and 15.0 respectively.

As the group of students will graph the data points, they will be able to conclude that the data points will fall along a line. This shows that as the force increases, the acceleration increases.

The law is also known as the force law, and it is a fundamental principle of classical mechanics. It defines the relationship between an object's motion and the forces acting upon it.

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Ml = 2l + 1 is the right formula to calculate the total number of potential orbitals in a subshell.

ml = -l,..., 0,..., +l is the magnetic quantum number (ml). Describes how an orbital with a certain energy (n) and form should be oriented in space. (l). Each subshell has 2l+1 orbitals, each of which may house one electron. This number separates each subshell into independent orbitals.

Due to the existence of subshells in each shell, this model collapses at the n=3 shell. The names of the four subshells are s, p, d, and f. Within each subshell, a different amount of electrons can fit. The n value determines how many subshells there are in the shell.

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Question:

Which of the following formulas gives us ml, the total number of possible orbitals within a subshell?

The velocity of the tennis ball when it is 0.27m from the ground is approximately 3.39 m/s.

What is velocity?

To calculate the velocity of the tennis ball when it is 0.27m from the ground, we can use the principle of conservation of mechanical energy, which states that the total mechanical energy of an object is conserved when it moves through a conservative force field, such as gravity.

At the initial position, the ball has potential energy due to its position above the ground, but no kinetic energy as it is at rest. At the final position, the ball has no potential energy (since it is at the same height as the ground), but it has kinetic energy due to its motion. Assuming that air resistance is negligible, the initial potential energy is converted into final kinetic energy, so we can equate these energies:

mgh = (1/2)mv²

where m is the mass of the ball, g is the acceleration due to gravity, h is the initial height of the ball above the ground, and v is the velocity of the ball when it is 0.27m from the ground.

We can rearrange this equation to solve for v:

v = √(2gh)

Substituting the given values, we get:

v = √(2 x 9.81 m/s² x (1.21 m - 0.27 m)) = 3.39 m/s

Therefore, the velocity of the tennis ball when it is 0.27m from the ground is approximately 3.39 m/s.

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the given values, we get va = sqrt((350 kg * 9.81 m/s² - 0)))

Since the cable is inextensible, the distance moved by both blocks is the same.

Let's denote the distance moved by both blocks as "d". Then, the distance moved by block A is "1m + d" to the right.

Using conservation of energy, we can write:

(1/2) * ma * va² + (1/2) * mb * vb²= (ma + mb) * g * d

where ma and mb are the masses of blocks A and B, va and vb are their velocities, and g is the acceleration due to gravity.

Since the system is released from rest, va = 0, and we can solve for vb:

(1/2) * mb * vb²= (ma + mb) * g * d

vb²= 2 * (ma + mb) * g * d / mb

vb = sqrt(2 * (ma + mb) * g * d / mb)

Now, we need to find the velocity of block A after it has moved 1m + d to the right. To do this, we can use the equations of motion. Since block A is moving to the right, we take the positive x direction to be to the right. Then, we have:

ma * a = T - fa

where a is the acceleration of block A, T is the tension in the cable, and fa is the frictional force acting on block A due to the incline.

The tension in the cable is the same throughout, so we can write:

T = mb * g

The frictional force fa can be calculated using:

fa = µ * ma * g * cos(theta)

where µ is the coefficient of friction, theta is the angle of the incline, and cos(theta) = 1/sqrt(2) since the incline makes a 45 degree angle with the horizontal.

Substituting these values, we get:

ma * a = mb * g - µ * ma * g / sqrt(2)

Solving for a, we get:

a = (mb * g - µ * ma * g / sqrt(2)) / ma

Now, we can use the equations of motion again to find the final velocity of block A after it has moved 1m + d to the right. We have:

d = (1/2) * a * t²

where t is the time taken by block A to move 1m + d to the right.

Substituting the value of a, we get:

d = (1/2) * [(mb * g - µ * ma * g / sqrt(2)) / ma] * t²

Solving for t, we get:

t = sqrt(2 * d * ma / (mb * g - µ * ma * g / sqrt(2)))

Finally, we can use the equations of motion again to find the final velocity of block A. We have:

1m + d = (1/2) * a * t²

Substituting the values of a and t, we get:

1m + d = (1/2) * [(mb * g - µ * ma * g / sqrt(2)) / ma] * [2 * d * ma / (mb * g - µ * ma * g / sqrt(2))]²

Solving for the final velocity of block A, we get:

va = sqrt((mb * g - µ * ma * g / sqrt(2)) / ma * (1m + d) / 2)

Substituting the given values, we get:

va = sqrt((350 kg * 9.81 m/s² - 0

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When you contact anything hot, the heat is transmitted from the object to your hand, making it feel hot. When you contact something cold, heat is transmitted from your hand to the object, making it feel chilly.

when heated, the molecules of the liquid in the thermometer move faster, causing them to get a little further apart. this results in movement up the thermometer. when cooled, the molecules of the liquid in the thermometer move slower, causing them to get a little closer together.

When the liquid in the thermometer is heated, the molecules move quicker, forcing them to move wider apart. This causes the thermometer to rise. When the liquid in the thermometer is chilled, the molecules travel slower, leading them to get closer together.

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The pressure exerted by the man on the lilo is 450 pascals (Pa).

The pressure is the force per unit area, so we can calculate it using the formula:

pressure = force / area

In this case, the force is the weight of the man, which is 900 N, and the area is the surface area of the lilo, which is 2 m². Therefore, we can substitute these values into the formula:

pressure = 900 N / 2 m²

Simplifying, we get:

pressure = 450 Pa

Therefore, the pressure exerted by the man on the lilo is 450 pascals (Pa).

What is pressure?

Pressure is the amount of force applied per unit area over a surface. It is defined as the force per unit area perpendicular to the surface on which the force is acting. The unit of pressure is pascal (Pa), which is equivalent to one newton per square meter (N/m²).

What is force?

Force is a physical quantity that describes the interaction between two objects that can change the state of motion or shape of an object. It is defined as an influence that causes an object to undergo acceleration, or a change in velocity, or deformation.

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The theoretical efficiency of a Diesel engine with a compression ratio of 18 and a cutoff ratio of 2 is 0.94.

The efficiency of the Diesel cycle, denoted by η, can be expressed as a function of the compression ratio (r)
and the cutoff ratio (r_c)
as follows:
[tex]η = 1 - 1/(r^(r_c-1))[/tex]
This equation shows that as the compression ratio increases, the efficiency of the Diesel cycle increases.
When comparing the efficiency of the Diesel cycle to that of the Otto cycle, it can be seen that for a given compression ratio, the Diesel cycle is less efficient than the Otto cycle. To evaluate the theoretical efficiency of a Diesel engine with a compression ratio of 18 and a cutoff ratio of 2, we can use the equation above to calculate the efficiency as:
[tex]η = 1 - 1/(18^(2-1))[/tex]
η = 1 - 1/18
η = 0.94
Therefore, the theoretical efficiency of a Diesel engine with a compression ratio of 18 and a cutoff ratio of 2 is 0.94.

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Answer:

Explanation:

Density is a measure of how much mass is contained in a given volume. It is the amount of matter (mass) in a given space (volume). Density is usually expressed in units of mass per unit of volume, such as kilograms per cubic meter (kg/m³) or grams per milliliter (g/mL).

Volume is the amount of space occupied by an object or substance. It is the measurement of the three-dimensional space occupied by an object, substance, or material. Volume can be measured in different units, such as liters (L), cubic meters (m³), or cubic feet (ft³), depending on the scale of the object being measured.

A. The hockey puck moved at a constant speed away from Janine.

The hockey puck is in equilibrium as a result of moving at a steady pace. Dynamic equilibrium is the name given to this form of equilibrium. Hence, if the hockey puck is moving over the ice at a constant pace, it is in equilibrium.

There is no connection between velocity and speed; velocity is the direction that an object moves in. Velocity is the combination of speed and direction. Speed and velocity are very similar to each other.

The sum of the forces exerted on an object must be zero since, in accordance with Newton's first law of motion, an object moving at a constant speed experiences no net external force.

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Answer:

Explanation:

Distance is the total length of the path taken from point A to B (the total distance of the whole curvy train route).

Displacement is the straight-line distance from the start point to the end point.  Draw a straight line from A to B, then measure it in exact cm.  Multiply your measurement in cm by 5 to get the answer in km.

For the event to occur, Aircraft B will have travelled a distance of 980 NM.

Since Aircraft A is flying East, we can assume that the positive direction is to the East and negative direction is to the West. Let's assume that the position of Aircraft A is x and position of Aircraft B is x + 210 NM.

Let t be the time it takes for Aircraft A to catch up with Aircraft B. At that moment, both aircraft will be at the same position, so:

distance traveled by Aircraft A = distance traveled by Aircraft B

Ground speed x time = Ground speed x time + 210

Using the given ground speeds, we can set up the equation as:

340t = 280t + 210

60t = 210

t = 3.5 hours

Therefore, Aircraft B will have traveled a distance of:

distance = ground speed x time

distance = 280 kt x 3.5 hr

distance = 980 NM

So, Aircraft B will have traveled 980 NM when Aircraft A catches up with it at Point X.

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The value of f is 905/4 feet, After 4 seconds the ball reaches the ground and the velocity of the ball hit the ground is -10 - 4sqrt(905) ft/s

step 1:

When the ball reaches the maximum height, it means that the velocity is zero, we use this fact to calculate the value of "f".

The height of the ball is described by the function A is

[tex]h(t) = -16t² + 20t + 220[/tex]

When the ball reaches the maximum height, its velocity is zero, therefore:

[tex]v = dh/dt = 0[/tex]

We take the derivative of the height function to get the velocity function:

[tex]v(t) = -32t + 20[/tex]

When the velocity is zero, the ball has reached its maximum height:

[tex]-32t + 20 = 0[/tex] => t = 5/8 seconds

Step 2:

Now we calculate the maximum height by plugging in t = 5/8 seconds into the height function:\

[tex]h(5/8) = -16(5/8)² + 20(5/8) + 220[/tex]

= 905/4 feet

Step 3:

To determine when the ball reaches the ground, we need to find the time when the ball reaches a height of 0:

[tex]0 = -16t² + 20t + 220= > 2t² - 5t - 55 = 0[/tex]

Using the quadratic formula:

[tex]t = [5 ± sqrt(5² - 4(2)(-55))] / [2(2)]= (5 ± sqrt(905)) / 4[/tex]

We take the positive root since time cannot be negative:

t =  4 seconds

Step 4:

To calculate the velocity at which the ball hits the ground,

we take the derivative of the height function and evaluate it at the time when the ball hits the ground:

[tex]v(t) = -32t + 20= > v((5 + sqrt(905)) / 4)[/tex]

= -32((5 + sqrt(905)) / 4) + 20

= -10 - 4sqrt(905) ft/s

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Answer:B. Microwaves

Explanation:

Hope this helped you. Pls brainliest! :D

PE is the potential energy stored in the spring, k is the spring constant, and x is the  PE is the potential energy stored in the spring, k is the spring constant, and x is the displacement from equilibrium.

Displacement is a vector quantity that describes the overall change in position of an object from its initial position to its final position. It is a vector because it has both magnitude (the distance between the initial and final positions) and direction (the direction from the initial position to the final position).

For example, if an object moves from point A to point B, its displacement is the vector that points from A to B, regardless of the path taken to get there. Displacement can be positive, negative, or zero, depending on the direction of the vector.

Displacement is often used in kinematics, which is the study of motion without considering the forces that cause the motion. It is a key concept in describing the motion of objects in one, two, or three dimensions.

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Period (T):

T = 2π√(m/k)

where m is the mass of the object and k is the spring constant.

Maximum speed (Vmax):

Vmax = Aω

where A is the amplitude of oscillation and ω is the angular frequency, which is given by ω = √(k/m).

Total energy (Wtotal):

W total = 1/2 kA^2

where k is the spring constant and A is the amplitude of oscillation.

Given:

m = 509g = 0.509 kg

A = 13.0 cm = 0.13 m

k = 20.0 N/m

A. Determine the period T:

T = 2π√(m/k)

T = 2π√(0.509 kg / 20.0 N/m)

T = 0.798 s

Therefore, the period of oscillation is 0.798 s.

B. Determine the maximum speed Vmax:

ω = √(k/m) = √(20.0 N/m / 0.509 kg) = 8.05 rad/s

Vmax = Aω = 0.13 m * 8.05 rad/s = 1.05 m/s

Therefore, the maximum speed of the oscillating mass is 1.05 m/s.

C. Determine the total energy W total:

Wtotal = 1/2 kA^2 = 1/2 * 20.0 N/m * (0.13 m)^2 = 0.135 J

Therefore, the total energy of the oscillating mass is 0.135 J.

Energy is a physical property of objects that can be transferred to other objects or converted into different forms, but cannot be created or destroyed. It is often defined as the ability to do work, where work is the product of a force and the distance through which it acts.

Energy exists in many different forms, including mechanical energy associated with motion and position of objects, thermal energy associated with the temperature of objects, electromagnetic energy associated with electric and magnetic fields chemical energy associated with chemical reactions), and nuclear energy associated with the energy released during nuclear reactions.

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