A light ray ( f =5.09 × 1014 Hz) in air, incident on a boundary with fused quartz. At the boundary, part of the light is refracted and part of the light is reflected. Calculate the angle of refraction of the incident light ray. [

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.​

the answer would be c. motion and direction

i hope this : )

f=ma newton

f=100x2.5=250n