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Find the minimum initial speed of a projectile in order for it to reach a height of 2201 km above the surface of the earth.
A ball with mass 2.5 kg is moving in outer space with a velocity of 6.0 m/s horizontally, Find the final velocity of the pair
Inside a cart that is accelerating horizontally at acceleration ~a, there is a block of mass M connected to two light springs of force constants k1 and k2
Two aluminum wires have the same resistance. If one has twice the length of the other, what is the ratio of the diameter of the longer wire to the diameter of the shorter wire
An observer moving toward Earth with a speed of 0.96 notices that it takes 5.2 for a person to fill her car with gas. Assume, in its place, that the observer had been moving away from Earth with a speed of 0.80.
The centers of a 10kg lead ball and a 90g lead ball are separated by 8.0cm. What is the ratio of this gravitational force to the weight of the 90g ball
The tape is now wound back into the drum at angular rate. With what speed would the end of the tape move? (Note that our drawing specifies that a positive derivative of implies motion away from the drum. Be careful with your signs. The fact that the ..
A rock of mass 42 kg accidentally breaks loose from the edge of a cliff and falls straight down. What is the magnitude of the acceleration of the rock
A woman and her dog are out for a morning run to the river, which is located 4 km away. The woman runs at 2.5 m/s in a straight line. What is the total distance run by the dog
A water gun is filled and pumped up. It is held horizontal and fired at a height of .95 m above the ground. Determine the gauge pressure of the water in the gun's reservoir
The normal force equals the magnitude of the gravitational force as a roller coaster car crosses the top of a 59-m-diameter, What is the car's speed at the top
Three 15 cm long rods form an equilateral triangle. Two of the rods are charged to + 13nC , compute the electric field strength at the center of the triangle
A balsa-wood raft has the following dimensions: L=2.34m , W= 1.35m , H= 0.65m. if the mass of an average person is 72.5kg, how many people can the raft safely support
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