An Airtight Box, Having a Lid of Area 80 Cm²

question 55

Multiple Choice

An airtight box, having a lid of area 80 cm², is partially evacuated. Atmospheric pressure is 1.01 *10⁵ Pa. A force of 108 lb is required to pull the lid off the box. The pressure in the box was:

• A) 2.60 * 10⁴ Pa
• B) 6.35 * 10⁴ Pa
• C) 7.50 * 10⁴ Pa
• D) 1.38 * 10⁵ Pa
• E) 1.76 * 10⁵ Pa

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Definitions:

Unfair Labor Practices

Conduct by unions or employers that infringes upon employees' rights or breaches labor legislation.

Railway Labor Act

A U.S. law enacted in 1926 that seeks to avoid any interruption to commerce or to the operation of any carrier, facilitating labor relations in the railway and airline industries.

Trucking Industry

A sector encompassing businesses that provide transportation of goods by road, including both long-haul and local deliveries.

Clayton Act

An antitrust law enacted in the U.S. to promote fair competition and prevent monopolies, with provisions protecting labor unions and their activities.