Two balls with the same mass, one of wood and the other a Ping-Pong ball partly filled with sand, are rolled along a desk. The wooden ball rolls along nicely, but the
Ping-Pong ball stops in a few centimeters. What happened to its kinetic energy?
Was the kinetic energy changed to heat energy by the force of friction between the
ball and the desk? Explain your answer.

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to

Abeverage can is made of 3004-h19 aluminum alloy (elastic modulus 69 gpa, tensile yield strength 285 mpa, density 2.72 g/cm^3). the dimensions on the can are approximated as a thin-walled cylinder with a height of 4.83 inches, diameter of 2.60 inches. empty the can has a mass of 14.2 g. determine: a. the wall thickness of the cylinder b. assuming a pinned-pinned condition what is the critical load? c. assuming a fixed-fixed condition what is the critical load?