How much charge does a 9.0 v battery transfer from the negative to the positive terminal while doing 21 j of work?

Answer

2.3333 Coulombs

Explanation

The average work done to move by a  battery  is given by:

∴ Work done = QV

Where Q is the number of charge and V is the voltage from the cells.

21 = 9Q

21 = 9Q

Q = 21/9

  = 2.3333 Coulombs

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explanation:

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.