A laser beam is incident from the air at an angle of 30.00° to the vertical onto a solution of Karo syrup in water. If the beam is refracted to 19.24° to the vertical, what is the index of refraction of the syrup solution?
1.517
Physics & Space Science
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In a Compton scattering experiment, the scattered photon has a wavelength of 6.55 pm. If the scattering angle is 
what is the energy of the incident photon?
A. 1.43 MeV B. 218 keV C. 380 keV D. 117 keV E. 66.3 keV
Physics & Space Science
Which planet has the most moons?
a) Earth b) Mercury c) Saturn d) Mars e) Venus
Physics & Space Science
Which of these sounds characterize "white noise"?
A) surf B) rustling leaves C) bubbling water D) all of the above E) none of the above
Physics & Space Science
Based on the H-R diagram shown above, what is the spectral type of a main-sequence star with a luminosity 100 times greater than that of the Sun?
A) O B) A C) G D) M
Physics & Space Science