There is no vegetation present within the alpine biome.

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

What do you think car designers do if the damage caused by a crash test is too severe?

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.