Calculate the amount of heat needed to change 100 grams of ice at -50 degree C to steam at 110 degree C.

Please help I don’t understand this..

Energy flows from the producer level to the level. is called

Find v1, the speed of the fluid in the left end of the main pipe. express your answer in terms of h1, h2, g, and either a1 and a2 or γ, which is equal to a1a2.

The diagram shows a wave. the quantity shown is the amplitude. this quantity is directly proportional to which of these other quantities? a) energy b) frequency c) period d) wavelength