A proposed high-speed train between Houston and Dallas will travel a distance of 386 kilometers in 5.40 103 seconds. What is the average speed of this train
in meters per second?
o 1.40 x 10-2 m/s
o 7.50 x 10-2 m/s
0 71.5 m/s
O 140 m/s

Explanation:

the third answer is correct

71.5m/s

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.​

explanation:

as the height from which the ruler was dropped increased, the speed of the ruler at ryan's hand increased.