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3 years ago

Find the pressure if a force of 2 N is applied to an area of 0.0004 m2.

Physics

1 answer:

dybincka [34]3 years ago

3 0

The pressure is 5000 Pa

Explanation:

The pressure exerted by a force on a surface is given by the equation:

$p=\frac{F}{A}$

where

p is the pressure (measured in Pascal, Pa)

F is the magnitude of the force

A is the area of the surface on which the force is exerted

In this problem, we have:

F = 2 N

$A=0.0004 m^2$

Substituting into the equation, we find the pressure:

$p=\frac{2}{0.0004}=5000 Pa$

Learn more about pressure:

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A small 20-kg canoe is floating downriver at a speed of 2 m/s. 40 J is the canoe’s kinetic energy.

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Explanation:

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jek_recluse [69]

Answer:

$\huge\boxed{\sf P.E. = 240\ MJ}$

$\huge\boxed{\sf K.E. = 19.6\ MJ}$

Explanation:

Given:

Mass = m = 200,000 kg

Vertical Distance = h = 120 m

Speed = v = 14 m/s

Acceleration due to gravity = g = 10 m/s²

Required:

1) Gravitational Potential Energy = P.E = ?

2) Kinetic Energy = K.E. = ?

Formula:

1) P.E. = mgh

2) K.E. = $\displaystyle \frac{1}{2} mv^2$

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P.E. = 240 Mega Joules

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2) K.E. = 1/2 (200000)(14)^2

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K.E. = 19,600,000 Joules

K.E. = 19.6 MJ

$\rule[225]{225}{2}$

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