How Much Heat Must Be Added to a 8 $- 8 ^ { \circ } \mathrm { C }$

question 23

Multiple Choice

How much heat must be added to a 8.0 -kg block of ice at $- 8 ^ { \circ } \mathrm { C }$ to change it to water at $14 ^ { \circ } \mathrm { C } ?$ The
specific heat of ice is $2050 \mathrm {~J} / \mathrm { kg } \cdot \mathrm { C } ^ { \circ }$ the specific heat of water is $4186 \mathrm {~J} / \mathrm { kg } \cdot \mathrm { C } ^ { \circ }$ the latent heat of fusion of ice is 334,000 J/kg, and 1cal=4.186 J.

• A) 730 kcal
• B) 780 kcal
• C) 140 kcal
• D) 810 kcal
• E) 180 kcal

Describe the mechanisms of pupil dilation and constriction.

Explain the theories of color vision, including the Young-Helmholtz theory and the opponent-process theory.

Understand how perception of movement and detail is affected by different parts of the eye and types of cells.

Recognize the genetic and physiological basis of color-deficient vision.

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