Ajeweler working with a heated 47 g gold ring must lower the ring's temperature to make it safe to handle. if the ring is initially at 99ºc, what mass of water at 25ºc is needed to lower the ring's temperature to 38ºc? 5.9 g 3.7 g 2.2 g 6.8 g

State the right hand rule of the direction of magnetic field in a conductor carrying current

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.

How is zig zagging a form of acceleration?