Which describes the reflection of a wave? 1.ultraviolet waves of energy are taken in by sunburned skin. 2.a glass of water acts as a prism, splitting sunlight into a rainbow on a table. 3.sound waves from a shout move back and forth between canyon walls.

Current enters a circuit at a: 1.positive terminal 2.negative terminal 3.low potential side 4.resistor

The air that we breath is made mostly of which gaseous molecule

6–48 bananas are to be cooled from 24 to 138c at a rate of 215 kg/h by a refrigeration system. the power input to the refrigerator is 1.4 kw. determine the rate of cooling, in kj/ min, and the cop of the refrigerator. the specific heat of banana above freezing is 3.35 kj/kg·8c.