On a particle level, what happens when thermal conduction occurs within a liquid?
a. when fast particles rise to the top.
b. when slow particles sink to the bottom.
c. when particles stop moving.
d. when the average speed of particles is the same throughout the liquid.

What’s #16 asking and how do i solve it?

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?

Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.