As seen in the animation, in order to shape a 630.85g piece of steel (SHC = 500 J/kg*OC), you need to heat it up to the point where it is glowing red, which is about 429 OC. Once you have it to the shape you want, you need to cool it down by putting it in a 2.42L tub of water. If the final temperature is 37OC, what is the initial temperature of the water?

Explain why electric current cannot exist if a current doesn't have a voltage source.

The electric potential v is constant everywhere within a certain region of space. which statement below is true? the choices are: the electric field is also constant (but not zero) within the region. a charged particle placed within the region will experience an electric force. the electric field is zero everywhere within the region. the electric field varies from place to place within the region.

How much work would it take to move a coulomb charge across a 4 volt potential difference?