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Pascal's Law

When a force ...

Question

When a force of $1 N$ acts on an area of $1 m^{2}$ , the pressure exerted is equal to one pascal.

A

True

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B

False

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C

Ambiguous

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D

Data insufficient

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Solution

The correct option is A True
Answer is A.

The pascal is the SI derived unit of pressure, internal pressure, stress, and Young's modulus, defined as one newton per square meter. It is named after the French polymath Blaise Pascal.
Hence, the statement is true.

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Q. What is the force of 1 N acting over an area of 1 m² called?

Q. A force exerts a pressure of

45 N / m^{2}

when it acts on an area of

10 m^{2}

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Q. A pressure of 10 Pa acts on an area of 3.0 m². What is the force acting on the area? What force will be exerted by the application of same pressure if the area is made one-third?

Q. When a force acts on a large area, the pressure it exerts is more.

Q. Indicate whether the following are true or false. Rewrite the false statements correctly.
(a) If we apply the brakes to a moving car, it comes to rest. This shows that force can make a moving object go slower.
(b) When a force of 1 N acts on an area of 1 m² , the pressure exerted is equal to one Pascal.
(c) The foundations of high rise buildings are kept wide so that they exert less pressure on the ground and prevent the building from sinking into the ground.
(d) A boy throws a ball down from the second floor of a building. In this case, gravitational force is acting only on the ball.
(e) Friction helps us to walk more easily on a smooth, highly polished surface.
(f) An old truck tyre will cause more friction with the road than a new tyre.
(g) In the frozen northern regions of Canada, the Eskimos wear large snowshoes as that helps them to walk on freshly fallen snow.
(h) When a force acts on a large area, the pressure it exerts is more.
(i) Gravity and friction are both contact forces.

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