2. The amount of charge and the distance from the charge determine the...
2 answers:
Answer:
Strength of the electric field
Explanation:
The amount of charge and the distance from the charge determine the strength of the electric field.
Mathematically, it can be written as :
where,
q is the electric charge
r is the distance between the charges
It can be also defined as the electric force per unit electric charge. Hence, the correct option is (c) " Strength of the electric field ".
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Answer:
Power = 2.45Kw or 2450 Watts.
Explanation:
<u>Given the following data;</u>
Mass, m = 250kg
Height, h = 2m
Time, t = 2secs
We know that acceleration due to gravity, g is equal to 9.8m/s²
Power can be defined as the energy required to do work per unit time.
Mathematically, it is given by the formula;
But Energy = mgh
Substituting into the equation, we have
Power = 2450 Watts
To convert to kilowatt (Kw), we would divide by 1000
Power = 2450/1000
Power = 2.45Kw.
Therefore, the average power output of the weightlifter is 2.45 Kilowatts.