20 points + Brainliest. Please help! A piston is made of a gas-enclosed cylinder with a moveable top. For the system of the piston to be thermodynamic equilibrium, which set of condition must hold true?

A. Heat is added to the system, but never leaves it

B. Work is done by the system not on it.

C. Temperature and pressure are uniform throughout the system

D. Heat transfer and volume changes both occur very quickly

Two carts, one of mass 2m and one of mass m, approach each other with the same speed, v. when the carts collide, they hook together. assume that positive momentum is to the right. which graph best represents the momentum of both carts over time, before and after the collision?

Current from a charged capacitor lights a bulb. as time goes on the brightness of the

Acentrifuge in a medical laboratory rotates at an angular speed of 3,700 rev/min. when switched off, it rotates through 54.0 revolutions before coming to rest. find the constant angular acceleration (in rad/s2) of the centrifuge. your response is within 10% of the correct value. this may be due to roundoff error, or you could have a mistake in your calculation. carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. rad/s2