Asystem dissipates 12 j of heat into the surroundings; meanwhile, 28 j of work is done on the system. what is the change of the internal energy of the system?

+16 J

Explanation:

We can solve the problem by using the 1st law of thermodynamics:

where

is the change of the internal energy of the system

Q is the heat (positive if supplied to the system, negative if dissipated by the system)

W is the work done (positive if done by the system, negative if done by the surroundings on the system)

In this case we have:

Q = -12 J is the heat dissipated by the system

W = -28 J is the work done ON the system

Substituting into the equation, we find the change in internal energy of the system:

answer: f

explanation: g

potential energy is directly proportional to height.

more height = more potential energy.

greatest increase in height = greatest increase in potential energy

where are the points with the greatest increase in height ?

has to be c-e or d-e .