Determine the force per meter on a lightning bolt at the equator that carries 20 000 a and is perpendicular to the earth’s magnetic field, 3x10-5 t. what is the direction of the force if the current is straight up and the earth’s field direction is due north which is parallel to the ground.

667.6 × 10⁶ Nm

Explanation:

To determine the force, let:

The force be  = 20 000 A

The magnetic field = 3 × 10⁻⁵

Thus, the force will be =

Thus, the direction will be parallel to the equator

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

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