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Contact [7]
3 years ago
9

Why does a can collapse when a vacuum pump removes air from the can?

Physics
1 answer:
xeze [42]3 years ago
7 0
When a vacuum pump removes the air within the can, there is no more air molecules bombarding the inner surface of the can. Since the inner pressure=0, the atmospheric pressure will crush the can. Atmosoheric pressure is usually =1.3*10^5Pa.
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A 0.25 kg steel ball is tied to the end of a string and then whirled in a vertical circle at a constant speed v. The length of t
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Answer:

Explanation:

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4 + .25 x 9.8 = .25 x v² / .62

6.45 = .25 v² / .62

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v = 4 m /s .

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3 years ago
What are the fundamental units involved in pascal<br>​
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Answer:

<h2>FUNDAMENTAL UNITS INVOLVED ARE : NEWTON AND SECOND .</h2>

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3 years ago
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In a closed system, a cart with a mass of 1.5 kg is rolling to the right at 1.4 m/s, while another cart of mass 1.0 kg is rollin
bija089 [108]

Answer: The correct option is (c.).

Explanation:

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Velocity of Cart A = 1.4 m/s towards right

Mass of the cart B = 1.0 kg

Velocity of Cart B = 1.4 m/s towards left

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P_B=1.0 kg\times (-1.4m/s)=-1.4 kg m/s

(Negative sign means velocity of the cart is in opposite direction of that of the cart A)

Total Momentum =P_A+P_B=2.10 kg m/s-1.40 kg m/s=0.70 kg m/s

Hence, the correct option is (c.).

7 0
3 years ago
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You add 50 mL of water at 20°C to 200 mL of water at 70°C. What is the most
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Answer:

50*

Explanation:

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