Atimeline is necessary a. for every goal c. for every life goal b. for every academic goal d. for every high school goal select the best answer from the choices provided a b c d

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

Place me with this question is my last question

Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?