You move a refrigerator 25 m this requires a force of 90 n how much work was done while moving the refrigerator

2250 J

Explanation:

Work is the result when a force acts on an object and moves it by some distance and it is calculated in Joules. So here distance equals 25m and force equal 90N.

Formula:

The force and the distance covered was in the same direction, so the angle between them is 0°. The work can be found using the formula:

W = Fd cosθ

W = Fd cos0

W = Fd(1)

W = (90 N)(25 m)

W = 2250 Nm

W = 2250 J

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 .

emily ruth's annual premium is $1058.50

step-by-step explanation:

emily ruth is a female of 27 years age purchasing 20 year endowment insurance with face value $25000.

from the given table,

for females, the age of a male 3 years younger should be used.

so, we have to check for 24 year male for 20 year endowment.

it is 42.34 for every $1000 face value.

for a face value of $25000,

it is 25 * 42.34 = $1058.50

∴ emily ruth's annual premium is $1058.50