If there's a friction force of 20N toward the left, then you need to apply
a force of 20N toward the right, in order to keep the box moving at a
constant speed.
When there's a force pointing to the left and an equal force pointing
to the right, then the forces on the box are "balanced" ... they add up
to zero, and the box has zero acceleration. That means it moves in a
straight line at a constant speed.
Answer:
$10.08
Explanation:
There are 24 hours in a day.
Now, if we assume that the refrigerator uses the 200 Watts per hour, thus, in one day, it will consume;
200 x 24 = 4800 watts
Thus, in 30 days, it will consume;
4800 x 30 = 144,000 Watts
Now, 1000 watts = 1KW
Thus,144,000 watts = 144,000/1000 = 144 KW
Now, since the power company charges $0.07 per kWh, thus the cost for 144 KW = 144 x 0.07 = $10.08
<span> </span>Most of the stars in the Milky Way will end their lives as white dwarfs
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