you want to know which is the fluid that moves at 30 m / s through a 40 cm diameter pipe, find the cost. a. Q=0.943 m/s b. Q=943 m/s c. Q=043 m/s d. Q=3 m/s

d q=3 m/s

Explanation:

im not too sure hope that helps

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

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.​