The image below shows a single toy car rolling down a ramp. What observable feature(s) would you expect to be present if kinetic energy increases as the car rolls down the incline? multiple choice A. The toy car's speed would stay the same as it moved down the ramp.

B. The temperature of the car would decrease.

C. The toy car's speed would increase as it moved down the ramp.

D. Sound from the movement would be produced.

What is the most useful equation for electric power?

Currents in dc transmission lines can be 100 a or higher. some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. for a line that has current 150 a and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? express your answer in teslas and as a percentage of the earth’s magnetic field, which is 0.50 g. is this value cause for worry?

Aforce is a vector quantity because it has both?