Acarnot engine operates between two heat reservoirs at temperatures th and tc. an inventor proposes to increase the efficiency by running one engine between th and an intermediate temperature t and a second engine between t and tc using as input the heat expelled by the first engine.

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?

Two manned satellites approaching one another at a relative speed of 0.550 m/s intend to dock. the first has a mass of 2.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. assume that the positive direction is directed from the second satellite towards the first satellite. (a) calculate the final velocity after docking, in the frame of reference in which the first satellite was originally at rest.(b) what is the loss of kinetic energy in this inelastic collision? (c) repeat both parts, in the frame of reference in which the second satellite was originally at rest. final velocity(d) loss of kinetic energy = ?

Convection occurs when thermal energy is transferred by the movement of