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A 60-V generator supplies 4.5 kW of power. How much current does the generator produce?
A
A proton accelerates from rest in a uniform electric field of 652 N/C. At some later time, its speed is 1.26 106 m/s. How far has it moved in that interval
In addition, snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57 N. Find out the acceleration of the sled and child.
A solid sphere has a temperature of 408 K. The sphere is melted down and recast into a cube that has the same emissivity, What is the cube's temperature
In a photoelectric effect experiment, a metal sample is illuminated by 10.0 mW of ultraviolet light of wavelength 240 nm. What is the longest wavelength of light that can knock electrons out of this metal
A 1.7 kg rolling hoop with a radius of 9 cm rolls without slipping. If the angular speed of the hoop is 2.46 rad/s , compute rotational kinetic energy of the rolling hoop
Calculate the heat flow through a 0.500m long copper bar with a cross sectional area of 0.50 cm2. One end at 3.0 degrees Celsius and the other end at 100.0 degrees Celsius
The particles in the nucleus of an atom are approximately 1.00×10?15 apart, while the electrons in an atom are about 1.00×10?10 from the nucleus. How many pounds would the force be
A railroad car of mass m moving at v collides completely inelastically with a stationary railroad car of mass 2 m and couples to it
An iron tower in is 372 meters tall on a cold day (T = -7.1 degrees Celsius). What is its height of the tower on a hot day
A flywheel is rotating initially with an angular velocity of 3.0 rad/s clockwise. Sometime later it is rotating with an angular velocity of 8.0 rad/s counterclockwise. What is the direction of the angular acceleration
A teeter-totter is made of a 3.200 m long plank with a mass of 60.0 kg, what mass must be placed at the left end so that the teeter-totter is balanced
A train is travelling up a 5.0 degree incline at a speed of 2.25m/s when the last car breaks free and begins to coast without friction. a) How long does it take for last car to come to rest momentarily? b) How far did the last car travel before mo..
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