The following questions present a twist on the scenario above to test your understanding. suppose another stone is thrown horizontally from the same building. if it strikes the ground 55 m away, find the following values. (assume angles above the horizontal are positive.)
(a) time of flight
(b) initial speed

At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.

Aplayer uses a hockey stick to push a puck at a constant velocity across the ice. the weight of the puck is 170 n. the coefficient of friction is 0.0600. with what force must the player push the puck so that his force just equals the frictional force? 28.3 n 0.999 n 0.102 n 0.0104 n

Which of the following is the largest disadvantage of about half of the electricity in the united states comes from burning