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1 answer:
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Answer:1228.72 N
Explanation:
Given
Combined mass(m)= 20 kg
rope is at an angle of
Distance pulled =50 N
Force= 30 N
there will be two components of force
and
will do work while the
work will be as angle between force and displacement is zero
The microwave has 60% efficiency, this means that the power delivered (P=900 W) is 60% of the original power of the source, while the other 40% is dissipated.
We can write it this way:
where
is the power of the source, which we can find by re-arranging the equation:
We can write it this way:
where
Answer:
Result magnetic field=
Explanation:
We are given:
r = 160m
Let us say the lightning bolt is a long straight conductor.
Therefore we will use the formula:
B = Uo•I / 2πr
Substituting figures in the equation, we have:
;
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