3 years ago

What is the net displacement of the particle between 0 seconds and 80 seconds?

Physics

1 answer:

Zielflug [23.3K]3 years ago

3 0

Answer: 80

Explanation:

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Find the length of a pendulum that oscillates with a frequency of 0.16 hz. the acceleration due to gravity is 9.81 m/s 2 . answe

Vsevolod [243]

The period of the pendulum is the reciprocal of the frequency:
$T= \frac{1}{f}= \frac{1}{0.16 Hz}=6.25 s$

The period of the pendulum is given by
$T=2 \pi \frac{L}{g}$
where L is the length of the pendulum, and g the acceleration of gravity. By re-arranging the formula and using the value of T we found before, we can calculate the length of the pendulum L:
$L=g \frac{T^2}{(2 \pi)^2}=(9.81 m/s^2) \frac{(6.25 s)^2}{(2 \pi)^2}=9.71 m$

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A 15 W electric shaver is used for 3 minutes. How much energy does it use in joules?

borishaifa [10]

P=change in E/t
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=15*3
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The answer is 45J.

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