A projectile of mass m is fired straight up from an initial height zero with an initial speed v0 . The projectile rises to a maximum height of hmax and falls straight back down to a final height hf (hf > 0). The maximum height hmax is small compared to the radius of the Earth, so you can assume that g is constant. What is the total work done by the force of gravity on the mass during the flight

A40.0 l tank of ammonia has a pressure of 12.7 kpa. calculate the. volume of the ammonia if it’s pressure is changed to 8.4 kpa while its temperature remains constant.

If forces acting on an object are unbalanced. true or false

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.