Type of electromagnetic radiation is used to kills cancer cells
a microwaves
b. gamma rays
c. ultraviolet
d. sunlight

multiply 2kg by latent heat of vap

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

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graph question answered .. you think better when you are relaxed and happy

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.