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2 years ago

If a car is traveling 60 mph, its tires may have an rpm of 840. How many revolutions do the car’s tires make in one second?

Physics

1 answer:

Varvara68 [4.7K]2 years ago

5 0

Forget about the car's speed. You don't need it.

The tires spin 840 rpm. That's 840 <em>Revolutions per Minute</em> .

There are 60 seconds in 1 minute. So something that happens 840 times in 1 minute happens (840 / 60) times every second.

(840 rev per minute) / (60) = <em>14 revs per second</em> .

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Answer:

$P_2 - P_1 = 1.8 * 10^4\ Pa$

Explanation:

Given

$Height (h) = 1.70m$

Required

Determine the difference in the blood pressure from feet to top

This is calculated using Pascal's second law.

The second law is represented as:

$P_2 = P_1 + pgd$

Subtract P1 from both sides

$P_2 - P_1 = pgd$

Where

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$d =height = 1.70m$

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So, the expression becomes:

$P_2 - P_1 = 1.06 * 10^3 * 9.8 * 1.70$

$P_2 - P_1 = 17659.6Pa$

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Hence, the difference in blood pressure is approximately $1.8 * 10^4\ Pa$

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3 years ago

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Answer:

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3 years ago

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Answer:

The answer to question is below

Explanation:

Data

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2 years ago