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iren2701 [21]
4 years ago
11

What is the weight of an with a mass of 32kg

Physics
1 answer:
Salsk061 [2.6K]4 years ago
5 0

Answer:

22

Explanation:

I DONT KNOW

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Select the correct answer. What did Galileo discover when he dropped two cannon balls of different weights from the Leaning Towe
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Galileo successfully demonstrated that the balls took the same amount of time to reach the ground.

Choice B

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1. what factor does work depends on?<br>2. what factor does power depends on? ​
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1.motivation 2. ????
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7. A Cyclist speeds up from 6.00 m/s to 9.70 m/s in a time of 1.40 seconds.
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2.64m/s

Explanation:

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3 years ago
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Canadian nuclear reactors use heavy water moderators in which elastic collisions occur between the neutrons and deuterons of mas
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M*U + 0 = m*v'1 + 2m*v'2 
the zero means deuteron has no velocity
<span>where v'1 and v'2 are the post-collision velocities. 
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<span>U = v'2- v'1 </span>
<span>v'2 = U + v'1 </span>

<span>U = v'1 + 2(U + v'1) = 2U + 3v'1 </span>
<span>U = -3V </span>
<span>V = -U / 3 </span>
<span>The speed ratio is 1/3 </span>

<span>B) Since KE is proportional to the square of the speed, if the speed is 1/3, then KE is 1/9 </span>

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3 years ago
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Who exerts more pressure? a) A girl of 50 kg, wearing heels with an area of 1 cm2. b) An elephant of 4000 kg with foot area of 2
Mrrafil [7]

Answer:

The girl exerts more pressure.

Explanation:

Pressure can be defined as the force exerted normally or perpendicularly per unit area.

i.e P = F/A

<u>Girls</u>

Area of the heel = 1cm² = 10^(-4) m²

Force = mg = 50 × 10 = 500N

Pressure =

\frac{500}{10 ^{ - 4} }

= 5 \times  {10}^{6}

<u>Elephant</u>

<u>Area</u><u> </u><u>=</u><u> </u><u>2</u><u>5</u><u>0</u><u>cm</u><u>²</u><u> </u><u>=</u><u> </u><u>2</u><u>.</u><u>5</u><u> </u><u>x</u><u> </u><u>1</u><u>0</u><u>^</u><u>(</u><u>-</u><u>2</u><u>)</u><u>b</u><u> </u><u>m</u><u>²</u>

<u>Force</u><u> </u><u>=</u><u> </u><u>mg</u><u> </u><u>=</u><u> </u><u>4</u><u>0</u><u>0</u><u>0</u><u>0</u><u>N</u>

<u>Pressure</u><u> </u><u>=</u><u> </u>

<u>\frac{40000}{2.5 \times  {10}^{ - 2} }</u>

<u>= 1.6 \times  {10}^{6}</u>

5 0
3 years ago
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