Answer:
Yes! im not sure if this is correct :)
Explanation:
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:
There are many examples of electrostatic phenomena, from those as simple as the attraction of the plastic wrap to one's hand after it is removed from a package to the apparently spontaneous explosion of grain silos, the damage of electronic components during manufacturing, and photocopier & laser printer operation
Answer:
The average power is calculated as 735.0 W
Solution:
As per the question:
Total mass, M = 1200 kg
Counter mass of the elevator, m = 950
Distance traveled by the elevator, d = 54 m
Time taken, t = 3 min = 180 s
Now,
To calculate the average power:
First, we find the force needed for lifting the weight:
Force, F = (M - m)g = ![(1200 - 950)\times 9.8 = 2450 N](https://tex.z-dn.net/?f=%281200%20-%20950%29%5Ctimes%209.8%20%3D%202450%20N)
Now, the work done by this force:
W = Fd = ![2450\times 54 = 132300\ J = 132.3\ kJ](https://tex.z-dn.net/?f=2450%5Ctimes%2054%20%3D%20132300%5C%20J%20%3D%20132.3%5C%20kJ)
Average power is given as:
![P_{avg} = \frac{W}{t} = \frac{132300}{180} = 735.0\ W](https://tex.z-dn.net/?f=P_%7Bavg%7D%20%3D%20%5Cfrac%7BW%7D%7Bt%7D%20%3D%20%5Cfrac%7B132300%7D%7B180%7D%20%3D%20735.0%5C%20W)