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A 3600 kg block falls vertically through 5.6 m and then collides with a 640 kg pile, driving it 4.9 cm into bedrock. Assuming that the block-pile collision is completely inelastic, find the magnitude of the average force on the pile from the bedrock during the 4.9 cm descent.
A hot air balloonist rises vertically with a constant velocity of 6.0 m/s and releases a sandbag at the precise instant when the balloon is 40.0 m above the ground. what is the time when the sandbag hits the ground
A 67 kg man weighs 637 N on the Earth's surface. How far above the surface of the Earth would he have to go to "lose" 19 percent of the body weight.
A popgun uses a spring for which k=20 N/cm. How high can the gun shoot a 5.0 g projectile
A 1500 microfarad capacitor and a 5600 microfarad capacitor are connected in parallel across a 12.0 V potential difference. Determine the total energy stored in the capacitors
An ?-particle has a charge of +2e and a mass of 6.64 ? 10-27 kg. It is accelerated from rest through a potential difference that has a value of 1.06 X 106 V, What is the speed of the ?-particle
High jumpers usually sustain fractures in the lower third of the fibula. The world record for the high jump is held by Javier Sotomayor (Cuba) at 2.45 m (1993). what is the stress in the fibula
After solving a difficult physics problem, an excited student throws his book straight up. How much time does it take until the book hits the floor
the motor slows from 80 rad/s to 40rad/s while the turning the drum through an angle of 120 radians. Illustrate what is the magnitude of the angular acceleration of the motor?
An open container holds ice of mass 0.530 kg at a temperature of -15.7 Celsius . The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 810J/minute .
Two large parallel plates are separated by 0.90cmand carry uniform charge densities equal in magnitude and opposite in sign, Find the magnitude of the charge density on the plates
Two satellites, A and B, are in different circular orbits about the earth. The orbital speed of satellite A is thirty-six times that of satellite B
An archer shoots an arrow with a velocity of 45m/s at an angle of 50 degrees with the horizontal. An assistant standing on the level ground 150 m downrange from the launch point throws an apple straight up with the least initial speed required to ..
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