What is the energy in eV of a photon of yellow light? ? = 500 nm
2.48 eV
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Vision Problems: What power contact lens is needed to correct for farsightedness where the uncorrected near point is 75 cm?
A. +2.7 D B. -2.7 D C. +5.3 D D. -5.3 D
If you have two molecules of TiO2, how many oxygen atoms would you have?
A) 4 B) 2 C) 3 D) 6 E) none
From a location in the United States of America, a star is observed to be rising due East. Where will this star be located 6 hours later?
A) Directly overhead B) High in the Northern sky C) High in the southern sky D) Setting due West E) The location of the star cannot be determined from the information given.
Which of the following observations would not be likely to provide information about the final, explosive stages of a star's life?
A) studying the light rings around Supernova 1987A in the Large Magellanic Cloud B) decades of continuous monitoring of red giants in a globular cluster C) observing the structures of planetary nebulae D) neutrino detections from nearby supernovae