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Doss [256]
3 years ago
8

Why are concepts in physics described with formulas

Physics
1 answer:
guapka [62]3 years ago
8 0
"Gravity gets stronger when there's more mass and weaker when you get farther away" tells you very little.
"A whole lot of energy can come from just a little tiny bit of mass" tells you very little.
And "The speed of light is very very very very very fast" tells you almost nothing.
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A garden hose with an inside diameter of 0.75 inches is used to fill a round swimming pool 3.0 m in diameter. How many hours wil
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Answer:

23

Explanation:

First, we need to convert the hose diameter from inches to meters.

0.75 in × (2.54 cm / in) × (1 m / 100 cm) = 0.0191 m

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Q = vA

Q = v (¼ π d²)

Q = (0.30 m/s) (¼ π (0.0191 m)²)

Q = 8.55×10⁻⁵ m³/s

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V = 7.07 m³

Find the time:

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t = (7.07 m³) / (8.55×10⁻⁵ m³/s)

t = 82700 s

t = 23 hr

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