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PolarNik [594]
2 years ago
15

You could use an elevator or stairs to lift a box to the tenth floor. Which has greater energy? Why?

Physics
1 answer:
love history [14]2 years ago
6 0
Stairs because every step u take u use energy and the more steps the more energy
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An olympic hurdler accelerates at a rate of 15.5 m/s2 . what is the rate in miles/min2 ?
Wittaler [7]
You have to use conversion units for this. For every 1 mile, there is an equivalent amount of 1,609 meters. For every 1 minute, there is an equivalent amount of 60 seconds. Using the dimensional analysis approach, the solution is as follows:

Acceleration = 15.5 m/s²*(1 mile/1,609 m)*(60 s/1 min)² = 34.68 miles/min²
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3 years ago
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Answer:

1.7 J

Explanation:

The energy carried by a single photon is given by

E=hf

where h is the Planck's constant and f is the frequency of the photon.

The photon of our exercise has a frequency of f=1.7 \cdot 10^{17} Hz, therefore its energy is

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Please see the given attachment.

Explanation:

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Thank you.

<h2><em><u>PLEASE</u></em><em><u> </u></em><em><u>MARK</u></em><em><u> </u></em><em><u>ME</u></em><em><u> </u></em><em><u>AS </u></em><em><u>BRAINLEST</u></em><em><u>.</u></em></h2>

4 0
2 years ago
Fluids can flow and change shape to fit their containers. Which two states are<br> fluids?
mr_godi [17]

Answer: the two states that are fluid are;-

<u>#{1} liquid</u>

<u>#{2} gas </u>

Explanation:

as we know that there are mainly three states of substance

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Pani-rosa [81]

Impulse = change in momentum


The answer is 0.

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2 years ago
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