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Q. Two air carts of mass = 0.9 and = 0.40 are placed on a frictionless track. Cart 1 is at rest at first, and has a spring bumper with a force constant of 690. Cart 2 has the flat metal surface for a bumper, and moves toward the bumper of the stationary cart with an initial speed = 0.64. Assume that positive -axis is directed toward the direction of motion of cart 2.
What is Newtons Version of Keplers Third Law
Two charges, q1 and q2, are separated by a distance, r, and exert a force, F, on each other. What will the new force be if:
Calculate each star's speed, and state whether it is moving toward or away from us.
Soccer ball is kicked with a speed of 11.50 m/s at an angle of 30.0° above the horizontal. If the ball lands at the same level from which it was kicked, how long was it in the air.
Discuss briefly centripetal acceleration, the speed and the force exerted by a ball attached to a string.
What is the acceleration of two falling sky divers (mass 112.0 kg including parachute) while the upward force of air resistance is equal to one-fourth of their weight.
A container of hot water at 50 degrees cools to 49 degrees in how many seconds when it is placed in a room that is t 20 degrees. use newton's law of cooling to find the time it will take for the container to cool from 50 degrees to 49 degrees.
If a bullet is fired vertically upwards with the speed calculated in (b), what is the maximum height that the bullet can reach.
Speedboat A negotiates a curve whose radius is 198 m. Speedboat B negotiates a curve whose radius is 290 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
What is the magnitude of the acceleration of rock.
A spring with spring constant 12.5 hangs from the ceiling. A 400 ball is attached to the spring and allowed to come to rest. It is then pulled down 6.80 and released. What is the time constant if the ball's amplitude has decreased to 3.90 after 57.0 ..
A metal block of mass m slides on a horizontal surface that has been lubricated with a heavy oil so that the block suffers a viscous resistance that varies as the 3/2 power of the speed F(v)=-cv^3/2. If the initial speed of the block is v0 at x=0,..
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