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yaroslaw [1]
3 years ago
14

There is fluctuation in time measured by a pendulum clock why give reasons​

Physics
1 answer:
natulia [17]3 years ago
3 0

A major source of error in pendulum clocks is thermal expansion; the pendulum rod changes in length slightly with changes in temperature, causing changes in the rate of the clock. An increase in temperature causes the rod to expand, making the pendulum longer, so its period increases and the clock loses time.

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An egg is thrown nearly vertically upward from a point near the cornice of a tall building. It just misses the cornice on the wa
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Answer:

A) 17.7 m/s

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C) Zero

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Explanation:

given information

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time, t = 5 s

A) What is the initial speed of the egg?

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B) How high does it rise above its starting point?

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v = 0 (highest point)

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h = v₀²/2g

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C) What is the magnitude of its velocity at the highest point?

v = 0 (at highest point)

E) What are the magnitude and direction of its acceleration at the highest point?

g= 9.8 m/s², since the egg is moved vertically, the acceleration is the same as the gravitational acceleration.

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