12,762 Answered Questions for the topic physics

Physics

09/06/23

What will be the dimensions of b and c in this case if u = 18  and v = 4?
The acceleration of a particle moving along the x axis may be determined from the expression a = btu + ctv. What will be the dimensions of b and c in this case if u = 18 and v = 4? (Use the... more
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Physics

09/06/23

Enter the answer to the correct number of significant figures for this calculation, using the rules for significant figures. 2.10401 − 0.0057 + (16.09 × 3.142) = 52.65309
Below is the calculator result for the operations indicated. Enter the answer to the correct number of significant figures for this calculation, using the rules for significant... more
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Physics

09/06/23

A marathon runner completes a 42.188 km course in 2 h, 29 min, and 21 s. There is an uncertainty of 23 m in the distance traveled and an uncertainty of 1 s in the elapsed time.
A marathon runner completes a 42.188 km course in 2 h, 29 min, and 21 s. There is an uncertainty of 23 m in the distance traveled and an uncertainty of 1 s in the elapsed time. (Give all answers to... more
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Physics

09/06/23

Enter the answer to the correct number of significant figures for this calculation, using the rules for significant figures. (4.95960 − 0.0057 + 15) ✕ 3.14 = 62.655246
Below is the calculator result for the operations indicated. Enter the answer to the correct number of significant figures for this calculation, using the rules for significant... more
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Physics

09/06/23

Enter the answer to the correct number of significant figures for this calculation, using the rules for significant figures. 3.82193 + 10.5861 = 14.40803
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Physics

09/06/23

Enter the answer to the correct number of significant figures for this calculation, using the rules for significant figures. 1310 ✕ 3.14175 = 4115.693
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Physics

09/06/23

If the Sun's mass is about average, how many stars are there in the Milky Way galaxy? The mass of the Sun is of the order of 10^30 kg and the mass of the Milky Way galaxy is of the order of 10^42 kg.
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Physics

09/05/23

During a typical afternoon thunderstorm in the summer, an area of 16.0 km^2 receives 2.82 10^8 gal of rain in 18 min. How many inches of rain fell during this 18 min period?
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Physics

09/05/23

PLS help! A planet orbits a star.
b) In general, the gravitational potential energy for a planet orbiting a star is given by U = -(G*mplanet*mstar)/r. The maximum distance of this planet from its star is 700,000,000 km, and the... more
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Physics

09/04/23

Phsyics - Rotational Motion with a Pulley
Two masses (m1 = 5.0 kg and m2 = 2.8 kg) on opposite sides of pulley are released from rest, with m1 at a height of 0.76 m above the floor and m2 on the floor. The system then rotates without... more
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Physics Math

09/03/23

A tennis ball of mass 57g travels with velocity (56, 0, 0) m/s towards a wall.
A tennis ball of mass 57g travels with velocity (56, 0, 0) m/s towards a wall. after bouncing off the wall the tennis ball is observed to be traveling with velocity (-51, 0, 0)m/s57g = .057 kg56 *... more
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Physics Math

09/03/23

Here are the positions at thtree different times for a bee in flight

time one: 6.1 s position 1 (-2.9, 9.7,0)time two: 6.5 s position two {-0.8, 6.7, 0)A) between 6.1 and 6.5 what was the bee's average velocityaverage velocity = (5.25, -7.5, 0) (assignment counted... more
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09/03/23

wo charges q1 = −3.20 nC and q2 = +8.16 nC are at a distance of 1.47 µm from each other. q1 is fixed at its location while q2 is released from rest.

(a) What is the kinetic energy of the charge q2 when it is 0.340 µm from q1? in joules(b) The charge q2 has a mass m2 = 7.85 µg. What is its speed when it is 0.340 µm from q1? in m/s
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Physics

08/30/23

Physics Question
The helicopter view in the figure below shows two people pulling on a stubborn mule. (Take F1 = 144 N and F2 = 63.0 N.)Find the single force that is equivalent to the two forces shown.Find the... more
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Physics Math

08/30/23

vector problems; a rod of length 2.6 is located at r =(19, 18, -19)m and held in position so that
one end of the rod of length 2.6m is located at r= (19,18,-19)m and held in position so that the angle between the rod and the +x axis is 45 degrees, the angle between the rod and the +y axis is... more
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Physics

08/30/23

Capacitors in series
A 2μF and a 4μF capacitor are connected in series. A voltage of 1 kV is applied to the series capacitors. After charging, the voltage source is disconnected, and the capacitors are connected to... more
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Physics Math

08/30/23

physics the 3D vector of be from the given magnitude 331 cm
what is vector b in the same direction as vector a =(57, 52, "-21)" cm but the magnitude of 331 cm
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Physics Math

08/30/23

any vector can be written as a unit vector multiplied by the mangintude of the vector. write each of the following vectors as the magnitude of the vector tiems the appropriate unit vector
I keep trying this one and getting it wrong<2x10^6, -7x10^6, 5x10^6)the magnitude = 7280110.233 or 7.28x10^6then you divide x, y, z by the magnitude, but none of my answers are right because the... more
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Physics

08/29/23

Please Help Answer Questions!

1) When you are reading the results of scientific experiments, what are some features that you would expect to see in the design of a high-quality experiment? 2) How does... more
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Physics

08/28/23

What is the acceleration 𝑎y of the yellow car?
A blue car and a yellow car start from rest at a red stop light. When the light turns green, both cars accelerate forward.The blue car accelerates uniformly at a rate of 3.3 m/s2 for 3.0 s. It then... more
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Physics

08/28/23

Ignoring air resistance, if the speed of sound is 343 m/s, how deep ℎ is the well?
Imagine that you are standing at a wishing well, wishing that you knew how deep the surface of the water was. Cleverly, you make your wish. Then you take a penny from your pocket and drop it into... more
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Physics

08/28/23

At what time 𝑡meet after the blue ball is thrown are the two balls at the same height in the air?
A blue ball is thrown upward with an initial speed of 22.6 m/s from a height of 0.85 m above the ground. 2.76 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed... more
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Physics Math

08/26/23

A) Find the impulse given to the block. B) What momentum is required by the block? C) Find the final velocity of the block.
PLEASE PROVIDE THE COMPLETE ANSWER. THIS IS FOR MY ACTIVITY IN SCHOOL :)A 4-kg block at rest is acted upon by a constant force of 45 N for 6.6 s. A) Find the impulse given to the block. B) What... more
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Physics

08/25/23

A ball is thrown horizontal y from the roof of a building 75m tall with a speed of 4.6 m/s. What is the velocity of the ball just before it hits the ground.
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Physics

08/25/23

At time t=0 a particle starts moving along the x axis. If its kinetic energy increases uniformly with t, the net force acting on it must be
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