Which two substances combine in a car's engine to provide energy? O A. Carbon dioxide and water
O B. Heptane and water
O C. Carbon dioxide and oxygen
O D. Heptane and oxygen

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

Asystem containing an ideal gas at a constant pressure of 1.22×10^5 pa gains 2140 j of heat. during the process, the internal energy of the system increases by 2320 j. what is the change in volume of the gas?

What type of relationship exists between the length of a wire and the resistance, if all other factors remain the same? o a. resistance is directly related to length. ob. resistance is directly related to the square of the length. c. resistance is inversely related to the length. d. resistance is inversely related to the square of the length. reset next