Sam and Francis move a couch from their living room to a moving truck

using a combined force of 60 Newtons. The distance from the living room to

the truck is 13 m. How much work did they do?

Simplicity expression

Compare and contrast speed, velocity, and acceleration

A uniform solid disk and a uniform ring are place side by side at the top of a rough incline of height h. If they are released from rest and roll without slipping, determine the velocity vring of the ring when it reaches the bottom.

A uniform narrow tube 1.80 m long is open at both ends. It resonates at two successive harmonics of frequencies 280 Hz and 300 Hz. (a) What is the fundamental frequency (Hz) ? (b) What is the speed of sound in the gas in the tube (m/s) ?

What is the general relationship between the state of matter and density?

How does a bicycle rider's energy of motion changes as the gain speed while riding down a hill? Options: A) It is lost. B) It increases. C) It remains the same. D) It is stored in the bicycle rider.

When is a sailboat the stand on vessel in relations to a recreational power boat?

What happens when a balloon is rubbed with a woollen cloth?

A child causes a wagon to accelerate by pulling it with a horizontal force. newton's third law says that the wagon exerts an equal and opposite force on the child. how can the wagon accelerate? (hint: draw a free-body diagram for each object.)

Which wavelengths of light is the highest in energy?