How many galaxies exist?

The electric field vector acts in the same direction as the force F vector if q is positive and in the opposite direction if q is negative. How you understand about that?

How does energy transfer in gas-powered car begging with the battery

Describe how particles that make up an object change when the objects temperature increases

What's the difference between a 2.0 and a 3.0 earthquake on the Richter scale?

Within visible light, violet has the lowest frequency. a. True b. False

Explain the relationship between motion and frame of reference.

Two students are looking at a brightly lit full Moon, illuminated by the reflected light from the Sun. Consider thefollowing discussion between the two students about what the spectrum of moonlight would look like.

When performing a battery load test, what should the load be set to?

If you push on a wall of a building what will happen

A conductor, with outer surface labelled a, contains a cavity, inner surface b. In this cavity there is a conducting sphere of radius r, and surface c. The sphere carries a charge of 1 C, while the conductor a charge of 2 C.