Suppose a worker is pushing a wheelbarrow. He used a force of 625N to
perform 3500J of work on the wheelbarrow.
How far did he push it?
F 5.6 m
G
0.18 m
H
10.2 m
J
14.3 m

Using software, a simulation of a javelin being thrown both on earth and on the moon is created. in both cases, the velocity and angle of projection are kept the same. on earth, the javelin covers a distance y. what distance would it cover on the moon? (the moon’s gravity is about 1/6th that of earth.) a. 6y b. 6/y c. y/6 d. (y+6)2

In a system, when potential energy decreases, then entropy also decreases. true 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.