Physics - Study Mode

[#781] Air moves from the region where the air ________
Correct Answer

(C) Pressure is high to the region where the pressure is low

Explanation

Solution: Air moves from the region where the air pressure is high to the region where the pressure is low.

[#782] The hydraulic brakes used in automobiles is a direct application of :
Correct Answer

(D) Pascal's law

Explanation

Solution: The hydraulic brakes used in automobiles is a direct application of Pascal's law.

[#783] If we want to calculate the pressure of a liquid at the bottom of a vessel, the quantity which is not required to determine it, is
Correct Answer

(B) Surface area of the bottom of the vessel

Explanation

Solution: The pressure exerted by a static fluid depends only upon the depth of the fluid, the density of the fluid, and the acceleration of gravity. Static fluid pressure does not depend on the shape, total mass, or surface area of the liquid.

[#784] For which of the following game, players must have the knowledge of Pascal's law?
Correct Answer

(D) Scuba diving

Explanation

Solution: Scuba diving players must have the knowledge of Pascal's law.

[#785] Air pressure is usually highest when the air is
Correct Answer

(D) Cool and moist

Explanation

Solution: Air pressure is usually highest when the air is cool and moist.