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Q1. A man pulls a crate of mass 75.0 kg across a level floor. He pulls with a force of 180.0 N at an angle of 26.0° above the horizontal. When the crate is moving, the frictional force between the floor and the crate has a magnitude of 130.0 N. If the crate starts from rest, how fast will it be moving after the man has pulled it the distance of 2.80 m?
Q2. A 6.2 cm diameter wire coil is at first oriented so that its plane is vertical to a magnetic field of 0.63 T pointing up. Throughout the course of 0.10 s, field is changed to one of 0.25 T pointing down. What is an average induced emf in the coil?
You can turn the crank at a maximum rate of 3 turns per second, but hand crank is connected to the coil through a set of gears that makes the coil spin at a rate 6 times larger than the rate at which you turn the crank. What is the maximum emf you ca..
How much time passes by they collide
A 65Kg ice skater pushes off his partner and accelerates backwards at 1.3m/s^2. If the partner accelerates in the opposite direction at 2.0m/s^2, what is mass of the other skater.
Find out that the value of the gravitational field strength
Question: Field and force with three charges? What is the electric field at the location of Q1, due to Q 2 ?
Modeling the optical trap as a Hookean spring, evaluate the trap stiffness using the Boltzmann distribution. Determine the sphere diameter by comparing the Stokes drag and the tweezer force that balances the drag.
A puddle holds 150 grams of water. If .50 grams of water evaporates from the surface, what is the approx temperature altering of the remaining water.
A rattlesnake can strike with the acceleration equivalent to an increase in speed from 0 to 60 mi/h in 1/2 s. If the rattlesnake's head weighs 0.33 lb, what average power does the rattlesnake generate throughout its strike.
What is the breaking strength
The resistance of a copper wire of length L meter is 0.1 ohms. If the diameter of the wire is 0.045cm, find out its specific resistance.
How numerous atoms does each hand contain
The lens has a refractive index of 1.30. Find out the difference Δx in the positions where each crosses the principal axis.
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