A 1.8 kg book has been dropped from the top of the football stadium. Its speed is 4.8 m/s when it is 2.9 meters above the ground. A). What is its total mechanical energy? (mechanical energy includes kinetic and gravitational potential)

B). What was the total mechanical energy of the book at the instant it was released?

C). How high is the stadium?

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc

How much energy will be transferred to your eardrum while listening to this sound for 1.0 min?