3 years ago

Prove that Efficiency=MA/ VR x 100%

Physics

1 answer:

geniusboy [140]3 years ago

5 0

I HOPE IT WILL HELP YOU. Have a great day ahead.

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10. A boy weighs 475 N. What is his mass? (acceleration due to gravity on Earth is 9.8m/s2 = g)

Darya [45]

Answer: mass = 48.47 kg.

Explanation:

Formula : Weight = mg , where m = mass of body , g= acceleration due to gravity .

Given: Weight = 475 N

$g= 9.8\ m/s^2$

Substitute all values in formula , we get

$475= m \times9.8\\\\\Rightarrow\ m = \dfrac{475}{9.8}\\\\\Rightarrow\ m \approx 48.47\ kg$

Hence, his mass = 48.47 kg.

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3 years ago

A lamp plugged into an electrical outlet is turned on. The lightbulb in the lamp glows and gets hot. What energy transformations

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Explanation:thermal and eltrical

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4 years ago

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Unit positive test charge

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3 years ago

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During an experiment, a student moved a cell from pure water to salted water. What will most likely happen to the cell?

jarptica [38.1K]

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During an experiment, a student moves a cell from pure water to salted water. ... It will release water and shrivel. It will release water and burst.

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3 years ago

A coaxial cable consists of an inner conductor with radius ri = 0.20 cm and an outer radius of ro = 0.4 cm and has a length of 1

N76 [4]

Answer:

$R = 1.69*10^{11} ohm$

Explanation:

ri = 0.20cm

ro = 0.4 cm

length L = 13m

resistivity \rho = 2.00*10^13 ohm m

resistance can be determine by using following relation

$R = \frac{\rho}{2\pi L} ln\frac{ro}{ri}$

$R = \frac{2.00*10^{13}}{2\pi *10} ln\frac{.004}{.002}$

$R = 1.69*10^{11} ohm$

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3 years ago