A Block of Mass 4

question 59

Multiple Choice

A block of mass 4.0 kg rests on a horizontal surface where the coefficient of kinetic friction between the two is 0.20.A string attached to the block is pulled horizontally,resulting in a 3.0-m/s² acceleration by the block.Find the tension in the string.(g = 9.80 m/s²)

• A)12 N
• B)7.8 N
• C)20 N
• D)4.2 N

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Definitions:

1 Million

A numerical value representing one thousand thousands, often used to quantify a large quantity or scale.

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A method for managing pain or discomfort by intentionally inducing a second, less severe pain or irritation, to distract from the original pain.

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A persistent pain that continues for weeks, months, or even years beyond the usual recovery period or occurs along with a chronic health condition.

Gate Control Theory

The proposal that pain sensations must pass through a neural “gate” in order to reach the brain and can be blocked at that gate by neurons that inhibit signals from the nociceptors.