If 270 watts of power is used in 42 seconds, how much work is done? (Unit is joules (J), just type the number. Use commas if necessary).

Rank the pressure from highest to lowest (a) bottom of a 20-cm tall container of salt water, (b) bottom of a 20 cm-tall container of fresh water, and (c) bottom of a 5-cm tall container of mercury

How much force is required to accelerate a 50 kg mass at 2 m/s2?

What is the process when thermal energy is being added

A 4kg vase sits on a shelf at a height of 1.2m. how much gravitational potential energy is added to the vase when it is lifted to a shelf of height 1.4m?

What has to be different to allow refraction to occur? a. the medium b. the light c. the wave d. the speed

The basic building blocks of matter are called

A Heavy crate applied a force of 1500 N on a 25m2 piston. What force needs to be applied on a 0.8m2 piston to lift the crate?

The mass of your new motorcycle is 250kg on earth

Which of the following statements best describes the relationship between force and work? a. Work equals force divided by distance. b. Force and work are two terms for the same thing. c. Work is equal to certain forces, like gravity and friction. d.

A herringbone or tire track pattern on a radiograph is a result of