An elephant was standing on a bridge. The mass of the elephant was 5,000 kilograms. (That is about ½ a ton.) If the gravitational acceleration for the elephant was about 10 m/s2, how much force did the bridge need to apply to the elephant so it wouldn't fall?

Phase changes are chemical changes. true or false

6–43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.

Consider an ideal gas at 27.0 degrees celsius and 1.00 atmosphere pressure. imagine the molecules to be uniformly spaced, with each molecule at the center of a small cube. what is the length l of an edge of each small cube if adjacent cubes touch but don't overlap?