Determine the mechanical energy of this object: 1-kg ball rolls on the ground at 2 m/s a. the ball is on the ground, so the mechanical energy is zero b. 2 j c. 1 j d. 4 j

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

You have a pick-up truck that weighed 4,000 pounds when it was new. you are modifying it to increase its ground clearance. when you are finished

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.