At night an underwater scuba diver aims a flashlight beam toward the surface at 15° to the normal. Upon emerging into the air, the beam angle will be
A) less than 15°.
B) 15°.
C) more than 15°.
D) impossible to predict.
Answer: C
You might also like to view...
Electrons moving in a strong magnetic field emit ____________________ radiation
Fill in the blank(s) with correct word
The visual appearance of Neptune is much bluer than Uranus
Indicate whether the statement is true or false
Earth’s most potentially dangerous type of volcano is __________
Fill in the blank(s) with the appropriate word(s).
In the context of the stars in binary systems, which of the following statements is true of the Roche lobes?
A) Binary stars do not permit the transfer of mass from one star to the other. B) Matter inside a star's Roche lobe can be transferred to the companion star. C) A star's Roche lobe prevents any matter from outside the lobe from being lost. D) The Roche lobes can interfere with the evolution of the stars that are close together.