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A 56.0 kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.790 and 0.400, respectively.
A) What horizontal pushing force is required to just start the crate moving?
B) What horizontal pushing force is required to slide the crate across the dock at a constant speed?
A perfectly reflecting flat mirror is uniformly illuminated by light striking it perpendicularly. Calculate the intensity of the light
A bartender slides a drink along a bar to a customer seated 3 metres away in the positive x direction. At what initial speed should the bartender send the drink
A motorboat heads due east at 11.00 m/s across a river that flows toward the south at a speed of 3.40 m/s. What is the resultant velocity relative to an observer on the shore? If the river is 1360m wide, how long does take the boat to cross.
What are memory tricks, and explain in theoretical terms why they work?
a projectile is projected from the origin with a velocity of 45.0 m/s at an angle of 30.0 degrees above the horizontal. what is the range of the projectile
The fire department decides to use the burning books to heat water
A 105-kg water skier floating in a lake is pulled from rest to a speed of 14 m/s in a distance of 25m. What is the net force exerted on the skier, assuming his acceleration is steady.
A 5.0-kg projectile is fired over level ground with a velocity of 200.0 m/s at an angle of 30.0 degg above the horizontal. Over the entire trip the work done by the air forces is
q1. a 60 kg circus performer jumps from a 6.2 m height onto a trampoline and stretches it downward 0.36 m. assume that
Find the speed parameter and Lorentz factor for an electron that has a kinetic energy of 5.00 keV.
question1imagine drawing two equipotentials in plane of the figure one passing through point a and one passing through
A spacecraft of 140 kg mass is in a circular orbit about the Earth at a height h = 3RE. What is the spacecraft's kinetic energy
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