QUICK! You see someone who stuck one end of some scissors into the active current hole of an outlet, and one end of the scissors into the ground hole. How should you save them from
being dangerously electrically shocked?

An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.

What are two different ways you could find the value of a? explain these methods.

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?