Which statement best describes a relationship amongst hypotheses, theories, and laws? a hypothesis is used to explain laws and theories. a law is used to explain a hypothesis and theories. a hypothesis combines several theories. a theory combines several hypotheses.

Hypothesis is a proposed fact or observation which is to be tested or verified by series of experiments

Law is the description of experimental observation which is verified by series of experiments.

Theory is an explanation of phenomenon which is observed by several explanations and followed by all laws of nature.

So here we can say the best appropriate option is

A theory combines several hypotheses.

In a given theory we can combine several hypothesis to make is verified by series of experiments

b.transmitters send radio waves, and receivers capture radio waves.

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.