The interior of a greenhouse emits long-wavelength radiation due to its
A) green color.
B) plant cell structure.
C) transparency.
D) relatively low temperature.
Answer: D
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The energy in the water at the top of a waterfall is an example of gravitational potential energy
a. True b. False Indicate whether the statement is true or false
How is the sunspot cycle directly relevant to us here on Earth?
A) The sunspot cycle strongly influences Earth's weather. B) The Sun's magnetic field, which plays a major role in the sunspot cycle, affects compass needles that we use on Earth. C) The brightening and darkening of the Sun that occurs during the sunspot cycle affects plant photosynthesis here on Earth. D) Coronal mass ejections and other activity associated with the sunspot cycle can disrupt radio communications and knock out sensitive electronic equipment. E) The sunspot cycle is the cause of global warming.
How many values can the magnetic quantum number have in a hydrogen atom for which the orbital angular momentum quantum number is equal to 8?
A) 5 B) 17 C) 15 D) 8 E) 9
If 0.025 eV neutrons were fired through a double slit so that the first order interference occurred at 10°, what is the slit spacing?
A) 2.5 × 10-8 m B) 1.0 × 10-9 m C) 3.1 × 10-11 m D) 1.8 × 10-10 m E) No answer is correct since neutrons cannot act like waves.