What are Saturn’s rings mostly made of? A.
nitrogen and helium

B.
ice and water vapor

C.
volcanic dust particles

D. chunks of ice and rock

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?

The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.

The process of a material going through a change of state from a gas to a liquid