Why will astronauts probably never set foot on any of the Giant Planets?
A. Their gravitational attraction is so weak that they would float off.
B. Their clouds are so hot that any spacecraft getting near it would burn up.
C. These planets have no solid surfaces for them to land on.
D. Astronauts will land on the Giant Planets-the idea is perfectly reasonable.
Answer: C
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Given 1 angstrom unit = 10-10 m and 1 fermi = 10-15 m , what is the relationship between these units?
A) 1 angstrom = 10+5 fermi B) 1 angstrom = 10-5 fermi C) 1 angstrom = 10-25 fermi D) 1 angstrom = 10+25 fermi E) none of the given answers
A thin beam of laser light of wavelength 514 nm passes through a diffraction grating having 3952 lines/cm. The resulting pattern is viewed on a distant curved screen that can show all bright fringes up to and including ±90.0° from the central spot
If the experiment were performed with all of the apparatus under water (which has an index of refraction of 1.33), what would be the TOTAL number of bright spots that would show up on the screen? A) 6 B) 7 C) 12 D) 13 E) 14
The fraction of incident light that a body reflects is known as its
a. Rayleigh scattering. b. insolation. c. albedo. d. humidity.
The main form of radiation that our bodies emit is ultraviolet
Indicate whether the statement is true or false