Which of the following properties must be known in order to calculate the amount of heat needed to melt 1.0 kg of ice at 0ºC? I. The specific heat of water II. The latent heat of fusion for water III. The density of water
Sophia exerts a steady 40-N horizontal force on a 8-kg box resting on a lab bench. The box slides against a horizontal friction force of 24 N. Show that the box accelerates at 2 m/s2.
Calculate the power rating of a home appliance (in kilowatts) that uses 8 amps of current when plugged into a 120-volt outlet.
A lever with an output arm of 0.8 meter has a mechanical advantage of 6. What is the length of the input arm?
