A Fire Fighter Tightens the Nut on the Top of a Fire

question 40

Multiple Choice

A fire fighter tightens the nut on the top of a fire hydrant using a large wrench. If she applies a force of 250 N perpendicular to the wrench, at a point 0.75 m from the axis of rotation of the nut, how much work does she do on the nut as she rotates it through 45°?

• A) 190 J
• B) 150 J
• C) 290 J
• D) 130 J

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Definitions:

Burnout

A state of physical, emotional, and mental exhaustion caused by prolonged stress, often resulting from excessive and sustained work or activity.

Hopelessness

A feeling or state of despair where an individual feels that there are no possibilities for improvement in their situation.

Compassion Fatigue

Emotional distress or apathy resulting from the constant demands of caring for others, often experienced by healthcare professionals.

Productive Avoidance

A behavior or strategy focusing on doing useful tasks as a means to avoid confronting more challenging or discomforting issues.