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klio [65]
2 years ago
14

A man enters a tall tower, needing to know its height. He notes that a long pendulum extends from the ceiling almost to the floo

r and that its period is 27.5 s. (a) How tall is the tower
Physics
1 answer:
wariber [46]2 years ago
4 0

Answer: 187.68 m

Explanation:

Given

Time period T=27.5\ s

The time period of a pendulum is given by

\Rightarrow T=2\pi \sqrt{\dfrac{L}{g}}

where L=height of tower

Put values

\Rightarrow 27.5=2\pi \sqrt{\dfrac{L}{9.8}}\\\\\Rightarrow L=\dfrac{27.5^2\times 9.8}{(2\pi )^2}=187.68\ m

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Hope this helped!
5 0
3 years ago
Which processes cause rocks to be exposed<br> at Earth's surface? SC.7..6.2
seropon [69]

Answer:

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Explanation:

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3 years ago
An 888.0 kg elevator is moving downward with a velocity of 0.800 m/s. It decelerates uniformly and comes to a stop in a distance
bagirrra123 [75]

Answer:

The value of tension on the cable T = 1065.6 N

Explanation:

Mass = 888 kg

Initial velocity ( u )= 0.8 \frac{m}{sec}

Final velocity ( V ) = 0

Distance traveled before come to rest = 0.2667 m

Now use third law of motion V^{2} = u^{2} - 2 a s

Put all the values in above formula we get,

⇒ 0 = 0.8^{2} - 2 × a ×0.2667

⇒ a = 1.2 \frac{m}{sec^{2} }

This is the deceleration of the box.

Tension in the cable is given by T = F = m × a

Put all the values in above formula we get,

T = 888 × 1.2

T = 1065.6 N

This is the value of tension on the cable.

5 0
3 years ago
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Answer:

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Explanation:

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2 years ago
What is the elevation of point B?<br> What about F?
kolbaska11 [484]

Explanation:

Since I can only do this by observation, the elevation of F is approximately 850km and the elevation of B is 925km.

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3 years ago
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