Asmall sphere has a harge of 9uc and other small sphere has a charge of 4uc.

the distance between their centers is 6cm

what is the electrical force between them?

Electrical force, F = 90 N

Explanation:

It is given that,

Charge on sphere 1,

Charge on sphere 2,

Distance between two spheres, d = 6 cm = 0.06 m

Let F is the electrical force between them. It is given by the formula of electric force which is directly proportional to the product of charges and inversely proportional to the square of distance between them such that,

F = 90 N

So, the electrical force between them is 90 N. Hence, this is the required solution.

i think the answer is b

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.​