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muminat
3 years ago
12

A mixer-grinder has an efficiency of 65 percent. If the output work is 50 joules, what is the amount of input work required?

Physics
1 answer:
djyliett [7]3 years ago
6 0
We are to look for the input work that would yield 50 J when it is only at 65% efficiency. To show this mathematically: Input work  x (65/100) = 50 J. So to find the input work, we are to divide 50 J by (65/100). This is shown below:

Input work = 50 / (65/100) = 76.92 J

Therefore, the input work needed is 76.92 J.
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Give reasons.<br>a) Sunlight does not fall on the ground where cloud forms shadow.​
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During the evacuation of a system containing large amounts of moisture, it may be necessary to prevent freezing by increasing pr
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6 0
1 year ago
PLEASE HELP &lt;3
AVprozaik [17]

Answer:

The mass of Mr. Thomson’s prius is 2650 kg.

Explanation:

We are given with, the kinetic energy of  Mr. Thomson’s prius is 641300 J

He is moving with a velocity of 22 m/s

It is required to find the mass of Mr. Thomson’s prius.

Due to his motion, a kinetic energy will possess by him. The mathematical form of kinetic energy is given by :

K=\dfrac{1}{2}mv^2

Solving for m

m=\dfrac{2K}{v^2}

Plugging all the values, we get :

m=\dfrac{2K}{v^2}\\\\m=\dfrac{2\times 641300}{(22)^2}\\\\m=2650\ kg

So, the mass of Mr. Thomson’s prius is 2650 kg.

7 0
2 years ago
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