Frida walked to school (9 km) from their house. Next they went to the store (5 km). Frida then went to a friend's house ( 11 km) to eat some lunch. Finally, Frida returned home (5 km). What is their total displacement ? A 10 km 30 km B 25 km D. km

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

What is the measure of a change in an objects velocity?

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.