A 50,000. Kg barge moving at 4 0 m/s in the water is being slowed to test by a ture boat that can push on the barge in the opposite direction that it is moving with an average forte of 300.0 Newtons
How long will it take the tug boat to stop the barge?

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.​

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.