Work: Two Men, Joel and Jerry, Push Against a Wall

question 71

Multiple Choice

Work: Two men, Joel and Jerry, push against a wall. Jerry stops after 10 min, while Joel is able to push for 5.0 min longer. Compare the work they do

• A) Both men do positive work, but Joel does 75% more work than Jerry.
• B) Both men do positive work, but Joel does 50% more work than Jerry.
• C) Both men do positive work, but Jerry does 50% more work than Joel.
• D) Both men do positive work, but Joel does 25% more work than Jerry.
• E) Neither of them does any work.

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Definitions:

Hydrogen Atmosphere

An environment or a setting that predominantly contains hydrogen gas (H2).

Efficiency

The ratio of the useful output of a system to the input, expressed in percentage, indicating the system's ability to convert energy or resources into output effectively.

Cooling

The process of removing excess heat from a system to maintain optimal operating conditions, often critical in electrical and electronic systems to prevent overheating.

Synchronoscope

An instrument used to determine the exact point at which two alternating currents achieve synchronism, often used in the synchronization of generators.