As the Earth orbits the sun, it is closer in the winter than it is in the summer. How do you think this affects the speed at which the Earth is moving? Group of answer choices

Velocity is dependent more upon mass than distance from the sun.

It moves faster during the winter.

It moves faster during the summer.

It is always moving at the same velocity.

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.

Explain why electric current cannot exist if a current doesn't have a voltage source.