(a) A train is moving with a velocity v with respect to the train station. A passenger on the train throws a tennis ball straight upwards. Describe the motion of the tennis ball as viewed by an observer inside the train. [1] (11) an observer standing at the train station. [2]an observer standing at the train station

Amanometer is used to measure the air pressure in a tank. the fluid used has a specific gravity of 1.25, and the differential height between the two arms of the manometer is 34 in. if the local atmospheric pressure is 12.7 psia, determine the absolute pressure in the tank for the cases of the

The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes