A fish is 2.1 m beneath the surface of a still pond of water. At ...

[biggirl4568]

A fish is 2.1 m beneath the surface of a still pond of water. At what maximum angle can the fish look toward the surface (measured with respect to the normal to the surface) in order to see a fisherman sitting on a distant bank? (for water, n = 1.333)
 a. 18.6
  b. 48.6
  c. 37.2
  d. The fish will not see the fisherman at any angle.

Question 2

What happens to a given mass of water as it is cooled from 4C to zero?
 a. expands
  b. contracts
  c. vaporizes
  d. Neither expands, contracts, nor vaporizes.

[owenfalvey]

Answer to Question 1

B

Answer to Question 2

A

[biggirl4568]

TYSM

[atrochim]

Excellent