Explain why total internal reflection has make communication much faster through the use of fibre optic

cables.

Using the periodic table, choose the more reactive medal? Ag or Te

Which sentences describe the advantage of using a hydrogen fuel cell instead of burning fossil fuels? A. The reaction of hydrogen and oxygen conveniently takes place inside a fuel cell. B.

Object A, which has been charged to + 13.5 nC, is at the origin. Object B, which has been charged to - 22.05 nC, is at x=0 and y=1.84 cm. What is the magnitude of the electric force on object A?

Different _ of an element have different numbers of neutrons?

Your high-fidelity amplifier has one output for a speaker of resistance 8 Ω. How can you arrange two 8-Ω speakers, one 4-Ω speaker, and one 12-Ω speaker so that the amplifier powers all speakers and their equivalent resistance when connected

Jack drops a stone from rest off of the top of a bridge that is 24.4 m above the ground. After the stone falls 6.6 m, Jill throws a second stone straight down. Both rocks hit the water at the exact same time.

How is Electric current able to flow?

In a series circuit, loads which have the same voltage dropped across them will have?.

When a brick is dropped from the roof of a house, it lands on the ground with a speed v. What will the speed at ground level be for an identical brick dropped from a roof twice as high as the first one?

The scientific method begins with recognizing a problem. The recognized problem in this scenario is, "Why is the printer in the office not working?" Choose the hypotheses that are testable and from which an experiment can be formed.