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A satellite is in circular orbit 230 kilometer above the surface of the Earth. It is observed to have a period of 89 min. Evaluate what is the mass of the Earth? (The mean radius of Earth is 6.38 x 10^6 meter).
With what minimum speed must you toss a 170g ball straight up to just touch the 12-m-high roof of the gymnasium, With what speed does the ball hit the ground
a 30 kg child stands on the edge of a stationary merry-go-round of radius 2.0 m. What is the angular speed of the merry-go-round just after the ball is caught
A spherical balloon of volume 3.94 103 cm3 contains helium at a pressure of 1.15 105 Pa. How many moles of helium are in the balloon
A closed system consists of 4 objects. Initially, object A has a charge of -200 C, object B has a charge of 134 C, object C has a charge of-54 C, and object D has a charge of146 C. After 219s have passed, object A has a -108 C charge, object B has a ..
A copper pipe with an outer radius of 0.014 m runs from an outdoor wall faucet into the interior of a house. Find the inner radius of the pipe
The potential energy stored in the compressed spring of a dart gun, with a spring constant of 66.50 N/m, is 1.040 J.Find by how much is the spring is compressed.
Element X decays to element Y with a half-life of 0.77 s. Initially there is a sample of pure X and after 2.31 s there are 7g of Y. What was the mass of the original sample
in a football game a kicker attempts a field goal. the ball remains in contact with the kickers foot for 0.0261 s
two tanks are engaged in a training exercise on level ground. the first tank fires a paint-filled training round with a
How long does it take the crate to hit the ground. suppose that the plane continues to fly with the same velocity.
A 9.9 cm long spring (k = 900 N/m) is compressed by 2.4 cm. What is the potential energy due to the spring in Joules
The single cable supporting an unoccupied construction elevator breaks when the elevator is at rest at the top of a 175 m high building.
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