A 40 kg sled is pulled rightward across the ground by an applied force of 340 N. A friction force of 200 N acts in the opposite direction. Air resistance can be ignored. (a) What is the net force on the sled? (b) What is sled's acceleration?

i'm just gonna leave this comment here, so i can get a challange done-

explanation:

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 results is a decrease in air temperature with an increase of altitude.

explanation:

no. dot product   =0 when vecs at right angles