Which of the following statements cannot be associated with the electroweak interaction?
c. this statement is false. Both have masses below 100 GeV/c2.
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Diffraction Gratings: A beam of light of wavelength 600 nm is incident normally on a diffraction grating with a spacing between slits of 1.70 × 10-4 cm. At what angle away from the centerline does a first-order maximum occur?
A. 10.5° B. 12.1° C. 16.4° D. 18.2° E. 20.7°
Find the equation 
that fits the following data.
A. 
B. 
C. 
D. 
Which alcohol is used in rubbing alcohol?
a. 2-Hydroxypropane b. Ethylene glycol c. Ethanol d. Methanol
Two very flat glass plates, 16 cm long, are in contact at one end and separated by 0.020 mm at the other end
The space between the plates is occupied by oil with index of refraction 1.45. The refractive index of the glass plates is 1.55. The plates are illuminated at normal incidence with monochromatic light, and fringes are observed. When the monochromatic light has a wavelength of 580 nm, how many bright fringes are visible in the pattern? A) 60 B) 70 C) 80 D) 90 E) 100