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nadezda [96]
3 years ago
11

A flashlight is an example of

Physics
1 answer:
katrin2010 [14]3 years ago
5 0
Source of the light
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What is an accurate definition of a heat engine? A. a system that converts mechanical energy into thermal energy B. a system tha
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C

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C. a system that converts thermal energy into other useful forms of energy

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What is championship game of baseball called? The World Series The Super Bowl The World Cup​
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The World Series

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A steel guitar string with a diameter of 0.300 mm and a length of 70.0 cm is stretched by 0.500 mm while being tuned. How much f
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10.1 N

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A ____________ galaxy has arms of gas and dust; where as _____________ galaxy is a category of galaxy that does not have a disti
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i took the test :)

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3 years ago
An air bubble has a volume of 2.0 cm3 when it is released by a submarine 100 m below the surface of a freshwater lake. What is t
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21.35 cm^3

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let the volume at the surface of fresh water is V.

The volume at a depth of 100 m is V' = 2 cm^3

temperature remains constant.

density of water, d = 1000 kg/m^3

Pressure at the surface of fresh water is atmospheric pressure,

P = Po = 1.013 x 10^5 N/m^2

The pressure at depth 100 m is P' = Po + hdg

P' = 1.013 \times 10^{5}+ 100 \times 1000 \times 9.8

P' = 10.813 x 10^5 N/m^2

Use the Boyle's law

P V = P' V'

1.013 \times 10^{5}\times V = 10.813 \times 10^{5}\times 2

V = 21.35 cm^3

Thus, the volume of air bubble at the surface of fresh water is 21.35 cm^3.

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