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A rock is dropped from a tree of height 25 m into a lake (depth 5.0 m) below. After entering the water, the rock then floats gently down through the water at a speed of 1.5 m/s to the bottom of the lake. What is the total elapsed time?
The blue ball moves at an angle of -35° and a velocity of 2.1 meters/second. What is the final y-momentum of the system?
The capacitance of an empty capacitor is 2.5 x 10^-6 F. The capacitor is connected to a 3 volt battery and charged up, Write the equation for q in terms of K, C(subscript zero), and V
A box is lifted with a pry bar , by slipping the bar under the box and lifting up on the bar. what is the size of the force required to lift the box
A bare helium nucleus has two positive charges and a mass of 6.64 multiplied by 10-27 kg. What voltage would be needed to obtain this energy
A bullet of mass 7.00g is fired horizontally into a wooden block of mass 1.26kg resting on a horizontal surface.What was the initial speed of the bullet
Suppose two alpha particles were held together so they were just touching. Estimate the electrostatic repulsive force each would exert on the other
a large 17 kg roll of paper with radius r=19cm rests against the wall and is held in place by a bracket attached to a rod through the center of the roll. compute the magnitude of the angular acceleration of the roll
On a certain amusement park ride, passengers are seated in a horizontal circle of radius 7.5m. the seats begin to rotate from rest and are uniformly accelerated for 21 seconds to a most rotational speeds of 1.4 rad/s.
A 3.00-g bullet, traveling horizontally with a velocity of magnitude 370 m/s, is fired into a wooden block with mass 0.800 kg, What is the decrease in kinetic energy of the bullet
What is the angle. The velocity of a particle moving in the xy plane is given by = (5.5t - 4.5t2)i + 8.3j
A 10,000 kg railroad car is rolling at 1.5 m/s when a 4000 kg load of gravel is suddenly dropped in. What is the car's speed just after the gravel is loaded
you notice that the image flips when you are 0.500 m from the mirror. Determine the radius of curvature for the mirror
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