A 100 N weight falls from rest from a height of 500 mm and strikes a spring which compresses by 100 mm. Compute the value of the spring constant, neglecting the mass of the spring.

3. One pound of liquid water is at its boiling point of 575oF. It is then heated at constant pressure to 650oF, and then compressed at constant temperature to one-half of its volume (at 650°F), and finally returns to its original state of the boiling point at 575°F. Calculate AH and AV for the overall process

Identify two true statements about projectiles among the following

1. The horizontal component of velocity always remains constant during projectile

2. The vertical component of velocity remains constant during projectile

3. The vertical component of velocity changes due to the downward gravity

4. The kinetic energy becomes zero at maximum height