Ron fills a beaker with glycerin (n = 1.473) to a depth of 4.0 cm. If he looks straight down through the glycerin surface, he will perceive the liquid to be what apparent depth?
a. 5.9 cm
b. 4.0 cm
c. 2.7 cm
d. 3.3 cm
e. 4.9 cm
c
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A cluster containing a thousand or more galaxies, usually mostly ellipticals, scattered over a volume only a few Mpc in diameter is referred to as a(n) _____
A) elliptical galaxy cluster B) irregular galaxy cluster C) poor galaxy cluster D) rich galaxy cluster
Energy from the core of the Sun first travels slowly through the convection zone and then much faster through the radiation zone
Indicate whether the statement is true or false
The pressure on your left palm is one half the pressure on your right palm
Indicate whether the statement is true or false
Radioactive Decay: The half-life of a radioactive material is 4.5 days. How many days are required for a sample, with an initial activity of 1.0 × 105 Bq, to decay to an activity of 100 Bq?
A. 45 days B. 36 days C. 54 days D. 31 days