The work dine should br like 4x the amount it stared as
Answer:
0N
Explanation:
Parameters given:
Q1 = Q2 = Q3 = 100 * 10^(-9) C
r = 0.3 m
The net force on the middle charge is:
F = F(1,2) + F(2,3)
Where F(1,2) = force due to Q1 on Q2
F(2,3) = force due to Q3 on Q2
F(1,2) = k*Q(1)*Q(2)/r²
F(1,2) = [9 * 10^9 * 100 * 10^(-9) * 100 * 10^(-9)]/(0.3²)
F(1,2) = 0.001N
F(2,3) = k*Q(2)*Q(3)/r²
F(2,3) = [9 * 10^9 * 100 * 10^(-9) * -100 * 10^(-9)]/(0.3²)
F(2,3) = -0.001N
Therefore,
F = 0.001 - 0.001
F = 0N
Infrared waves are ineffective for treating cancer because they do not transfer enough energy to destroy cancer cells.
<h3>Importance of high frequency waves</h3>
One of the uses of a high frequency wave is in the treatment of cancer. These high frequency waves transfer enough energy to destroy the cancer cells.
E = hf
where;
- f is frequency of the wave
Infrareds have low frequency, and hence low energy.
Thus, infrared waves are ineffective for treating cancer because they do not transfer enough energy to destroy cancer cells.
Learn more about high frequency here: brainly.com/question/1807992
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Answer:
E = 73.5 J
Explanation:
Given that,
Mass of a marble, m = 5 kg
It is placed at the edge of a 1.5 m table
We need of find the gravitational potential energy of the marble. It is given by the formula as follows :
E = mgh
E = 5 kg × 9.8 m/s² × 1.5 m
E = 73.5 J
So, the potential energy of the marble is 73.5 J.