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3 years ago

A balloon contains 0.075 m^3 of

Physics

1 answer:

inessss [21]3 years ago

7 0

Answer:

600 KPa.

Explanation:

From the question given above, the following data were obtained:

Initial volume (V1) = 0.075 m³

Final volume (V2) = 0.45 m³

Final pressure (P2) = 100 KPa

Initial pressure (P1) =?

Temperature = constant

The initial pressure can be obtained by using the Boyle's law equation as shown below:

P1V1 = P2V2

P1 × 0.075 = 100 × 0.45

P1 × 0.075 = 45

Divide both side by 0.075

P1 = 45 / 0.075

P1 = 600 KPa.

Thus, the initial pressure in the balloon is 600 KPa.

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2 years ago

A point source at the origin emits sound of frequency 175 Hz uniformly in all directions. On the x-axis at x=100 m, the sound in

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Answer:

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3 years ago

If a person uses about 4 calories to fuel a minute of walking, and it takes about 20 minutes to walk a mile, approximately how m

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Answer:

43.75 miles must a person walk to utilize the energy in (“burn”) a pound of fat.

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1 calories are burnt in 0.25 minute of walking.

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3 years ago

A 1,200 kg car travels at 20 m/s. what is it’s momentum ?

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Answer:

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