Use the Following to Answer Question

question 7

Multiple Choice

Use the following to answer question:
-Heat is added to a substance at a constant rate.The substance starts as a solid and is melted; the liquid is heated and vaporized; finally,the vapor is heated.This process is shown in the graph.The latent heat of fusion can be found by

• A)multiplying the length of B (in seconds)by the rate at which heat is added,and dividing by the mass of the substance.
• B)multiplying the length of D (in seconds)by the rate at which heat is added,and dividing by the mass of the substance.
• C)multiplying the slope of A by the rate at which heat is added,and dividing by the mass of the substance.
• D)multiplying the slope of C by the rate at which heat is added,and dividing by the mass of the substance.
• E)multiplying the slope of E by the rate at which heat is added,and dividing by the mass of the substance.

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Definitions:

Lateral Spinothalamic Tract

A neural pathway in the spinal cord responsible for transmitting pain and temperature sensations to the brain.

Head Control

The ability to hold and move the head in a stable and controlled manner, a developmental milestone in infants.

Infant

A very young child or baby, typically from birth to one year of age.

Prone Position

A body position where an individual lies flat with the chest down and the back up.