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svetlana [45]
3 years ago
9

Which of the following is not a potential sign of chemical change? a. release of gas c. change of color b. evaporation of water

d. production of gas Please select the best answer from the choices provided A B C D
Physics
1 answer:
vitfil [10]3 years ago
5 0
B is the answer. because it is a physical change

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A boy weighs 50 kg and is running with 225 J of energy, what is his velocity?
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Ford used to make a 7.0 liter engine. Calculate how many many cubic inches would be the same size engine.
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Answer : The volume of engine in cubic inches is, 427.166\text{ inch}^3

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1\text{ liter}=1000cm^3

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1\text{ inch}=2.54cm

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1cm=\frac{1}{2.54}\text{ inch}

1cm^3=(\frac{1}{2.54}\text{ inch})^3

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1cm^3=(\frac{1}{2.54}\text{ inch})^3

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7000cm^3=\frac{7000cm^3}{1cm^3}\times (\frac{1}{2.54}\text{ inch})^3=427.166\text{ inch}^3

Thu, the volume of engine in cubic inches is, 427.166\text{ inch}^3

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