Using 1000 J of Work,a Toy Elevator Is Raised from the Ground

question 55

Multiple Choice

Using 1000 J of work,a toy elevator is raised from the ground floor to the second floor in 20 seconds.The power needed to do this job was

• A)20 W.
• B)50 W.
• C)100 W.
• D)1000 W.
• E)20,000 W.

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Definitions:

Oxygen

A chemical element with symbol O and atomic number 8, critical for respiration in living organisms and combustion processes.

Gallium

A soft, silvery metal used in electronic circuits, and in the production of low-melting alloys.

Atomic Symbol

A one or two-letter abbreviation that represents a chemical element, derived from its English or Latin name.