The graph below shows the change in average kinetic energy, as represented by temperature, of a 23 g sample of a substance as energy is added to the substance as heat.

What is the specific heat capacity of the solid?

A. 1.85 × 10³ J/kg•°C
B. 4.0 × 10² J/kg•°C
C. 5.0 × 10² J/kg•°C
D. 1.1 × 10³ J/kg•°C

Aperson walks first at a constant speed of 4.89 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.95 m/s. what is the average speed over the entire trip?

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)

12. a body is a particular amount of matter. it can be a solid, liquid or gas. it can be described as existing in a. size and shape. b. motion and force c. time and space. d. location and movement.