The motion of a piston in an automobile engine is nearly simple harmonic. if the 1-kg piston travels back and forth over a total distance of 15.6 cm if 14.2 m/s is the maximum speed of the piston, in rpm the engine is running at?

explanation:

earth's surface is mainly heated by the absorption of infrared radiation from the sun.

evaporation occurs because molecules in liquid water are warmed ( usually by the sun) and vibrate quicker, becoming less dense and rise.

condensation occurs because molecules in water vapor are cooled and therefore vibrate more slowly thus becoming more dense and eventually fall to earth.

lines of equal barometric pressure on a weather map are called: isobars : lines of equal temp on a weather map are called: isotherms.​

i'm on my way to history not a mistory.

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray