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A factory worker pushes a 28.7 crate a distance of 4.9 along a level floor at constant velocity by pushing downward at an angle of 29 below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.26 What magnitude of force must the worker apply to move the crate at constant velocity?
Each plate of a parallel-plate capacitor is a square of side 0.0339 m and the plates are separated by 0.407 × 10-3 m. Find the electric field strength inside the capacitor
A solid sphere of mass 2.5 kg and a radius 0.15m starts from rest at the top of the a ramp inclined 15 degrees, What is the total kinetic energy of the sphere when it reaches the bottom of the ramp
Consider a car which weighs about 2000 kg and is parked at an elevation of 30 m above the bottom of a hill with a constant slope equal to -.5. what is a horizontal component of the force on the car
A 15 kg disk of radius 1 m is spinning at a rate of 4 rotations per second. What is its moment of rotational inertia
Suppose you have an electric hot water heater for your house which is an aluminum cylinder which has a 0.46 m radius and is 2 m high. How much energy is lost through the walls of the hot water heater
A 2.85kg bucket is attached to a disk-shaped pulley of radius 0.121m and mass 0.842kg . If the bucket is allowed to fall, What is the angular acceleration of the pulley
What is the magnitude of the dipole moment and find an expression for the electric field Eat the center of the semicircle. Give your answer in component form.
What credible cosmological models, besides the Big Bang, are out there, and what are their implications for the age of the Universe
An air-filled capacitor is formed from two long conducting cylindrical shells that are coaxial and have radii of 37 mm and 92 mm. The electric potential of the inner conductor regarding the outer conductor is -574 V.
Two small nonconducting spheres have a total charge of 90.0. When placed 1.14 apart, the force each exerts on the other is 11.8 and is repulsive. What is the charge on each
A subway train starts from rest at a statrion and accelerates at a rate of 1.65m/s^2 for 14.2s. Find the total distance covered
A person with a weight of 280 lb stands on two feet wuth their weight equally distributed between the shoes, What is the pressure on each show independently
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