A Sledge (Including Load) Weighs 5000 N

question 29

Multiple Choice

A sledge (including load) weighs 5000 N. It is pulled on level snow by a dog team exerting a horizontal force on it. The coefficient of kinetic friction between sledge and snow is 0.05. How much work is done by the dog team pulling the sledge 1000 m at constant speed?

• A) 2.5 * 10⁴ J
• B) 2.5 * 10⁵ J
• C) 5.0 * 10⁵ J
• D) 2.5*10⁶ J
• E) 5.0* 10⁶ J

Understand the role of cognitive biases and errors in perception and judgment.

Analyze the impact of first impressions and stereotypes on social interactions.

Understand the concept and examples of social influence and conformity.

Recognize the mechanisms and effects of cognitive dissonance.

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Definitions:

Incentive Spirometer

A respiratory therapy device used to encourage patients to breathe deeply to prevent lung complications after surgery or during illness.

Dyspnea

The experience of breathing discomfort or difficulty, often described as shortness of breath.

Sinus Tachycardia

A condition where the heart rate exceeds the normal resting rate, typically defined as a heart rate greater than 100 beats per minute in adults.

Electrocardiogram Monitor

A device used to record the electrical activity of the heart over a period of time, detecting cardiac abnormalities.