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Ira Lisetskai [31]
2 years ago
15

What is theory of relativity and why this theory made??????

Physics
2 answers:
Ymorist [56]2 years ago
7 0

Answer:

e=mc2 made to relate mass with energy . bcoz energy can neither b created nor b destroyed

frosja888 [35]2 years ago
6 0

Answer:

Leave it bro!!!.....

I have got members!!!

But if you want then come up from my id #LV89QRGCL

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At which of the following air temperatures will the
monitta

Answer:

The answer is: B. -487 ..............

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Both the Moon and the Sun influence the tides on Earth. The moon has a much greater influence though. Why is that? A) because th
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C. The sun is 400 times farther from Earth than the moon is.
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What's a difference between mercury and oxygen?<br> (They both are elements)
borishaifa [10]

--  There are 80 protons in the nucleus of every atom of Mercury,
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--  Mercury must be colder than -39°C in order to freeze, but Oxygen
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3 years ago
What is 28 degrees Celsius converted to Fahrenheit?
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3 years ago
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The lowest note on a grand piano has a frequency of 27.5 Hz. The entire string is 2.00 m long and has a mass of 440g . The vibra
ANEK [815]

Answer:

Tension, T = 2038.09 N

Explanation:

Given that,

Frequency of the lowest note on a grand piano, f = 27.5 Hz

Length of the string, l = 2 m

Mass of the string, m = 440 g = 0.44 kg

Length of the vibrating section of the string is, L = 1.75 m

The frequency of the vibrating string in terms of tension is given by :

f=\dfrac{1}{2L}\sqrt{\dfrac{T}{\mu}}

\mu=\dfrac{m}{l}

\mu=\dfrac{0.44}{2}=0.22\ kg/m

T=4L^2f\mu

T=4\times (1.75)^2\times (27.5)^2 \times 0.22

T = 2038.09 N

So, the tension in the string is 2038.09 N. Hence, this is the required solution.

6 0
3 years ago
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