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Savatey [412]
3 years ago
12

What is the effeciency of the machine that has an input of 120 and an output of 96?

Physics
1 answer:
Rama09 [41]3 years ago
6 0
Efficiency  = output divided by input
96/120 = 0.8
or can say 80% as well

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A proton is 0.9 meters away from a 1.4 C charge. What is the magnitude of the electric force between the proton and the charge
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Answer:

F = 2.49 x 10⁻⁹ N

Explanation:

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F = \frac{kq_1q_2}{r^2}\\

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Consider eight,eight-cubic centimeter (8 cm3) sugar cubes stacked so that they form a single 2 x 2 x 2 cube. How does the surfac
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To find the surface area of a single cube we first nees to take the cube root of 8cm3 which is 2.

Now we know that the length of each side is 2 and we can find the area of one side by doing 2x2 which is 4.

To find the total surface area of one cube we do 4 times 6 side giving us a total of 24cm2.

To find the total surface area of the 8 individual cubes, we multiply 24cm2 by 8 to give us a total of 192cm2.

Now to find the total surface area of the one large cube, we know that each side of one of the small cubes is 4cm2 and the large cube is set up so that there are two levels of four cubes right on top of each other. So, the total area of each side of the large cube is 4cm2 times 4 which gives us 16cm2.

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The ratio of the surface area of the single large cube comapred to the total surface area of the single cubes is 96:192

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96:192

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12:24

6:12

3:6

1:2
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