What is stress? how dose dose it relate to strain?

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.

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass

Calculate a pendulums frequency of oscillation (in hz) if the pendulum completes one cycle in 0.5s.