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3 years ago

A pendulum has a length of 2 m and a 30 kg mass hanging on the end. What is the period of the

Physics

1 answer:

anastassius [24]3 years ago

7 0

Answer:

T = 2.83701481512 seconds

Explanation:

Hi!

The formula that you will want to use to solve this question is:

$T = 2\pi *\sqrt{\frac{L}{g} }$

T--> period

L --> length of the pendulum

g --> acceleration due to gravity (9.8m/s^2)

since we know that the mass of the bob at the end of the pendulum does not affect the period of the pendulum, we can go ahead and ignore that bit of information (unless, of course, the weight causes the pendulum to stretch)

so now we can plug in our given info into the formula above and solve!

T = 2*pi * sqrt(2/9.8)

T = 2.83701481512 seconds

*Note*

- I used 3.14 to pi, if you need to use a different value for pi (a longer version, etc) your answer will be slightly different

I hope this helped!

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Explanation:

If we assume there is a sharp boundary between the two masses of air, there will be a refraction. The refractive index of each medium will depend on the relative speeds of light.

n = c / v

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nh < nc

Snell's law of refraction relates angles of incidence and refracted with the indexes of refraction:

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If blue light from the sky passing through the hot air will cross to the cold air, then

n1 = nh

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3 years ago

Absolute zero (K=0 or -273.15°C) is what temperature on the Farenheit scale? a) 459.4°F b) -301.43 °F c) 233.05°F d) -40.15°F e

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Answer:

e) None of these is true

Explanation:

Given that

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$\dfrac{K-273}{100}=\dfrac{F-32}{180}$

Now by putting the values

$\dfrac{K-273}{100}=\dfrac{F-32}{180}$

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So F= - 459.67°F

So we can say that 0 K is equal to - 459.67°F.

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3 years ago