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3 years ago

A man of 450 N covers an area of 0.0015m2 while standing on his feet.calculate the pressure exerted by him on the ground.

Chemistry

1 answer:

ahrayia [7]3 years ago

6 0

Answer:

3×10⁵ N/m²

Explanation:

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

Force (F) = 450 N

Area (A) = 0.0015 m²

Pressure (P) =?

Pressure is simply defined as the force per unit area. Mathematically, it is expressed as:

Pressure (P) = Force (F) / Area (A)

P = F/A

With the above formula, we can obtain the pressure exerted by the man on the ground. This can be obtained as follow:

Force (F) = 450 N

Area (A) = 0.0015 m²

Pressure (P) =?

P = F/A

P = 450 /0.0015

P = 3×10⁵ N/m²

Thus, the pressure exerted by the man on the ground is 3×10⁵ N/m².

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2 years ago

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3 years ago

Read 2 more answers

If there are 80 liters of argon gas in a piston and the piston expands the gas until its volume is 2000 liters with a pressure o

Mice21 [21]

Answer: The correct answer is A. 11.5 atm. The temperature is held constant at 293 K, therefore, we can use Boyle's Law to determine the initial pressure. Boyle's Law states that there is an inverse relationship between pressure and volume of gases. Therefore, as volume increases, the pressure will decrease and vice versa.

Further Explanation:

Boyle's Law can be mathematically expressed as:

$P_{initial}V_{initial}\ = P_{final}V_{final}$

In this problem, we are given the values:

P(initial) = ?

V(initial) = 80 L

P (final) = 0.46 atm

V (final) = 2000 L

Plugging in these values into the equation:

$P_{initial}(80 \ L) = \ (0.46 \ atm)(2000 \ L)\\P_{initial} \ = \frac{(0.46 \ atm) \ (2000 \ L)}{80 \ L}\\P_{initial}\ = 11.5 atm\\$

The initial pressure was 11.5 atm. Since the volume increased or expanded, the space where the gas particles move is bigger, so the frequency of collisions with the wall of the container and with other particles are effectively decreased. This, therefore, decreases the pressure from 11.5 to 0.46 atm.

Learn More

Learn about Charles' Law brainly.com/question/1421697
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Keywords: gas, Boyle's Law, Ideal Gas Law

7 0

3 years ago