Why the pressure due to the harmonic motion is zero​

Ahypothesis is? close agreement by competent observers of observations of the same phenomena. a guess that has been tested over and over again and always found to be true. an educated guess that has yet to be proven by experiment. the long side of a right triangle. a synthesis of a large collection of information that includes guesses.

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

Explain the consequences of this addiction to the brain tissue