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Q. The bolts on a car wheel require tightening to the torque of 90 N•m. If a 30 cm long wrench is used, what is the magnitude of the force necessary when the force applied at 53° to the wrench?
Q. Compute the time t for the pencil to hit the ground, assuming that it falls from standing perfectly vertical and maintains the angular acceleration.
A worker pushes horizontally on a large crate with a force of 297 N, and the crate is moved 4.8 m. How much work was done.
The pulley system is used to lift a 52 kg crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to crate. assume the masses of the chains, pulleys, and ropes are negligible, conclude the forc..
How long would it be on the incline before it arrives back at bottom.
Two projectiles are thrown with the same initial speed, one at an angle with respect to the level ground and the other at angle 90 degree. Both projectiles strike the ground at the equivalent distance from the projection point. Are both projectiles i..
Write down the expression for net torque
A flight attendant pulls her 61N flight bag a distance of 279m along a level airport floor at a constant velocity. The force she exerts is 41N at the angle of 50° above the horizontal.
What is the target's speed just after the bullet emerges.What is the velocity v of the smaller fish before lunch.
The rocket's speed was measured to be 1.49 c. The rocket's rest length is 380m. An observer flying through measured the rocket to be 199m long.
The minimum distance required to stop a car moving at 38.0 mi/h is 41.0 ft. What is the minimum stopping distance for the same car moving at 68 mi/h, suppose the same rate of acceleration.
The satellite has an orbital period around the Earth that is the similar as that of the Moon, 27.3 days. How far away from the Earth must this satellite be placed.
Two charged spheres are 15 cm apart. They are moved, and the force on each of them is found to have been quadrupled. How far apart are they now.
A generator uses a coil that has 210 turns and a 0.20-T magnetic field. The frequency of this generator is 60.0 Hz, and its emf has an rms value of 120 V. assume that each turn of the coil is a square (an approximation), conclude the length of wire f..
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