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A person drops a cylindrical steel bar (Y = 1.50 × 1011 Pa) from a height of 3.00 m (distance between the floor and the bottom of the vertically oriented bar). The bar, of length L = 0.85 m, radius R = 0.60 cm, and mass m = 0.60 kg, hits the floor and bounces up, maintaining its vertical orientation. Assuming the collision with the floor is elastic, and that no rotation occurs, what is the maximum compression of the bar?
A heart defibrillator is charged to 350V. It is connected to a patients chest and allowed to discharge through the heart. how much charge resides on the capacitor?
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.
The difference in potential between the accelerating plates of a TV set is about 29 kV. The distance between these plates is 1.2 cm. Find the magnitude of the uniform electric field in this region. Answer in units of N/C
One solenoid is centered inside another. The outer one has a length of 50.0 cm and contains 6750 coils, What is the mutual inductance of these solenoids
A block of metal has an actual weight of 45 N and an apparent weight of 25 N in water. What is the buoyant force from the water
A 120 granite cube slides down a 40 degree frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 290 steel cube at rest. How high above the table should the granite cube be released to give steel cube a spe..
Electrons are accelerated from rest through an electric potential difference of 250kV, then the potential difference is changed to 60kV. What is the ratio of the two de Broglie wavelengths produced by the electron
A 15-g ball is shot from a spring gun whose spring has a force constant of 600N/m. The spring can be compressed 5 cm. How high can the ball be shot if the gun is aimed vertically
Two infinite long wires are parallel to one another and are 5.0 cm apart. Both have current passing through them in the same direction. What is the resulting force on the 1.0 A wire
A 1.57-? resistor is connected across a 6.90-V battery. The voltage between the terminals of the battery is observed to be only 6.30 V
The National Museum of Photography, Film & Television, in England, has a huge converging lens with a diameter of 1.37 m and a focal length of 8.45 m. What is the image magnification
A 28kg rock approaches the foot of a hill with a speed of 15 m/s. Use energy conservation to find the max height above the foot of the hill reached by the rock
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