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sergeinik [125]
3 years ago
14

A 3.8 kg ball is rolling eastward across a horizontal,

Physics
1 answer:
natali 33 [55]3 years ago
8 0

Answer:

12

Explanation:

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Which mathematically describes the wave properties of electrons?.
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Why does a lunar eclipse last for a few hours whereas a solar eclipse only lasts for a few minutes?
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1. Define dark matter and dark energy, and clearly distinguish between them. What types of observations have led scientists to p
Vlada [557]

Explanation:

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          Scientist believe that they exists to account for the very fact that gravity holds all the heavenly bodies and the galaxies together. They are even responsible for the fluctuation in Cosmic Microwave background. Researchers and scientist firmly believe that all the visible matter that exists may not have enough gravitational pull to hold everything together in the galaxies. And also the expanding universe strongly proves that dark energy exists in the universe.

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3 years ago
A person who normally weighs 580 N is riding in an elevator that is moving upward, but slowing down at a steady rate. If this pe
Zanzabum

Answer:

M au = Fs - M g       au = upwards acceleration; Fs = scale reading

Fs = M (au + g)    scalar quantities where g is positive downwards and au is positive upwards - Fs is the net force acting on the person

If the acceleration is zero Fs = M g  and the scale reads the persons weight

If the elevator is decelerating then au is negative and the scale reading     Fs = (g - au) M     and the scale reading is less than the weight of the person

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2 years ago
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