You are unloading a refrigerator from a delivery van. the ramp on the van is 5.0 m long, and its top end is 1.4 m above the ground. as the refrigerator moves down the ramp, you are on the down side of the ramp trying to slow the motion by pushing horizontally against the refrigerator with a force of 270n .

part a

how much work do you do on the refrigerator during its trip down the ramp?

w =

Which sentences describe point source pollution? in this type of pollution, the source of the pollution is single and easily identifiable. when runoff water from the melting of snow mixes with debris, it creates pollution. the runoff water, mixed with pollutants, reaches large areas with disastrous effects. alternatively, when a wastewater treatment plant releases harmful chemicals into a stream, the chemicals pollute the stream water because they are not treated for safety.

Which of the following characteristics is fixed, or definite, for all states of matter?

What is the magnitude of the electric field at a point 0.0055 m from a 0.0025 c charge?