An Ideal Spring Is Used to Fire a 15

question 39

Multiple Choice

An ideal spring is used to fire a 15.0-g block horizontally. The spring has a spring constant of 20 N/m and is initially compressed by 7.0 cm. The kinetic energy of the pellet as it leaves the spring is:

• A) zero
• B) 2.5 * 10^-2 J
• C) 4.9 * 10^-2 J
• D) 9.8 * 10^-2 J
• E) 1.4 J

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Definitions:

Merocrine

A type of exocrine gland secretion where cells secrete their substances by exocytosis without losing cellular material.

Apocrine

A type of gland that releases its secretions by pinching off a portion of the cell, found mainly in the underarm and groin area, contributing to body odor when the secretion is broken down by bacteria.

Exocytosis

A cellular process in which substances are moved out of the cell through the fusion of vesicles with the plasma membrane.

Endocrine Gland

Glands of the endocrine system that secrete hormones directly into the bloodstream, regulating various body functions.