When a 45-Kg Person Steps on a Scale in an Elevator,the

question 27

Multiple Choice

When a 45-kg person steps on a scale in an elevator,the scale reads a steady 410 N.Which of the following statements must be true? (There could be more than one correct choice. )

• A)The elevator is accelerating upward at a constant rate.
• B)The elevator is accelerating downward at a constant rate.
• C)The elevator is moving upward at a constant rate.
• D)From the given information,we cannot tell if the elevator is moving up or down.

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Definitions:

Childbirth

The process of delivering a baby from the womb to the external world, which can involve various medical interventions and methods of pain relief.

Substantia Gelatinosa

A region in the dorsal horn of the spinal cord involved in the processing of pain and temperature information coming from the body to the brain.

Gate Control Theory

A theory suggesting that psychological factors play a role in the perception of pain and that pain signals can be blocked or passed through neural "gates" in the spinal cord.

Spinal Cord

A long, thin bundle of nerves that extends from the brain down the back, transmitting signals between the brain and the rest of the body.