A goldfish is swimming in water (n = 1.33) inside a spherical plastic bowl of index of refraction 1.33 . If the goldfish is 10.4 cm from the front wall of the 26.4-cm radius bowl, where does the goldfish appear to an observer in front of the bowl?
a. 7.12 cm behind the plastic
b. 15.9 cm behind the plastic
c. 12.2 cm behind the plastic
d. 8.67 cm behind the plastic
e. 12.2 cm behind the plastic
d
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Which of the following stars is a part of the Solar System?
A) The Sun B) Proxima Centauri C) Sirius D) The Pistol Star
The main constituent of the Martian atmosphere is
A) methane. B) helium. C) carbon dioxide. D) hydrogen. E) nitrogen.
Nuclear fusion within the Sun proceeds step by step in a series of reactions called the neutron–neutron chain
a. True b. False Indicate whether the statement is true or false
Sound intensity is defined as
A) the loudness of a sound. B) the sound energy passing through a unit of area. C) the sound power per unit time. D) the sound power per unit volume. E) the sound energy passing through a unit of area per unit time.