Which of the following best describes conduction?

A. Conduction is the transfer of thermal energy using waves through space or through a material medium. on 1
B. Conduction is when thermal energy is transferred by the motion of liquids or gases of varying densities.
C. Conduction is the movement of thermal energy directly from one particle to another particle through contact.
D. Conduction is the increase in thermal energy created by the restriction of the movement of energy particles.

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j ?

Thomas his older brothers, who own a junk yard, on the weekends to earn extra money. he likes to them push broken-down cars to the back of the junk yard because it makes him feel strong. last saturday, they pushed three cars with different weights, and he noticed he used different amounts of force for each one. the cars were the following weights: white car: 2,700 kg red car: 1,500 kg blue car: 2,100 kg think about how much force is needed to move each car. which correctly lists the cars in order from the most to least amount of force needed to move them? a) white, blue, red b) blue, red, white c) red, white, blue d) white, red, blue

An electron is traveling with initial kinetic energy k in a uniform electric field. the electron comes to rest momentarily after traveling a distance d. (a) what is the magnitude of the electric field