A uniform solid disk (=1/2^2) and a hoop (=^2) with different masses and radii are placed at the top of an inclined plane. They are both released from rest and then roll without slipping. What is the ratio of the speed of the hoop to the speed of the disk at the bottom of the inclined plane?

Which of these describe conduction transfer of heat between two objects that are touching transfer of heat by the actual movement of war matter the process in which energy is imitated by one of the object transmitted through space and absorbed by another a process in which energy is released by the molecules breaking apart

The smallest particle of an element that retains its identity in a chemical reaction. true or false

An air standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes. 1-2 isentropic compression 100 kpa and 22°c to 600 kpa 2-3 v=constant heat addition to 1500 k 3-4 isentropic expansion to 100 kpa 4-1 p=constant heat rejection to initial state (a) show the cycle on p-v and t-s s (b) calculate the net work output per unit mass (409 kj/kg) (c) determine the thermal efficiency (47.9%)