A spring has a natural length of 12 cm. If a 25-N force is required to keep it stretched to a length of 28 cm, how much work W is required to stretch it from 12 cm to 20 cm

According to newton’s first law of motion, which force is expected to cause a body to accelerate?

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?

Which of the following statements are evidence that gases do not always behave ideally? check all that apply.? a. co2 gas becomes dry ice (solid co2) at 1 atm and –78.5 °c. b. when two gases are mixed, they follow dalton\'s law of partial pressures. c. at 4 k and 1 atm, helium is a liquid. d. it is impossible to compress a gas enough so that it takes up no volume.