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1) A person is about to drop a 2 kg steel ball off the edge of a tall building, from a height of 50 meters. Before the ball is dropped, what is the ball's potential energy? (Answer in Joules, to the nearest Joule).
2) A person dropped a 2 kg ball from a height of 50 meters. Just before the ball hits the ground, what is the ball's kinetic energy? (Answer in Joules, to the nearest Joule
3) A person dropped a 2 kg ball from a height of 50 meters. Just before the ball hits the ground, what is the ball's velocity? (Answer in meters per second, to the nearest whole number)
4) A child's toy arrow has a mass of 0.1 kg and is tipped with a suction cup. The child shoot the arrow at 10 m/s and it hits 0.2 kg rubber ball, sticking to it. This result is a totally inelastic collision. How fast will the ball and arrow be traveling together just after the collision? (Answer in meters per second, to the nearest whole number)
A charge is placed at the origin, another charge -2Q is placed at (x=6m, y=0) and a third charge 4Q is placed at (x=0, y=8). A) What is the electric potential energy of the system? Your answer should be in terms of k and Q.
1. Calculate the magnitude of the gravitational force the Earth pulls on the 10 kg object.
What is the angular speed of the turntable when the child is 2.50 m from the center, assuming that you can treat the child as a particle?
An object is moving in the X - Y plane in such a way that Vx = 4t3 + 4t and Vy = 4t. If the position of the object is (1, 2) when t = 0, Determine the equation for the Trajectory
A 57 meter length of insulated copper wire is wound to form a solenoid of radius 2.3 centimeter. Find what maximum energy is stored in the inductor
Derive an expression for the entropy of NE atoms of the element E adsorbed on M (per square centimeter) assuming that the adsorbing atoms have zero interaction energy with each other. They do, of course, have an interaction energy with the surf..
The power capacity of all nuclear power plants in the United States is 1.01 × 105 MW. In one hour, what is the total change in the mass of the nuclear fuel
A grindstone with radius 0.65m starts from rest and rotates counter-clockwise through 3 rev at which point its angular speed is 25 rad/s
If the elastic limit of steel is 5.0 multiplied by 108 Pa, determine the minimum diameter a steel wire can have
A 2.0 µF capacitor and a 4.0 µF capacitor are connected in parallel across a 270 V potential difference. Calculate the total energy in joules stored in the capacitors
In the overhead view of the figure, a long uniform rod of mass m = 0.29 kg is free to rotate in a horizontal plane about a vertical axis through its center. A spring with force constant 360 N/m is connected horizontally between one end of the rod ..
A satellite orbits a planet of unknown mass in a circle of radius 2.3 x 107 m. The magnitude of the gravitational force on the satellite from the planet is F = 89 N. What is the kinetic energy of the satellite in this orbit
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