A 17 mm wide diffraction grating has rulings of 530 lines per mm. Light is incident normally on the grating. The longest wavelength that forms an intensity maximum in the fifth order is closest to:
A) 377 nm
B) 352 nm
C) 402 nm
D) 427 nm
E) 452 nm
A
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Why is it easier to locate meteorites in Antarctica than anywhere else on Earth? a. Antarctica is an easy location for humans to access
b. More scientists are in the area to find meteorites. c. When meteorites land, they melt a small crater on the ice. d. Meteorites are easy to detect on top of the ice where there are no Earth rocks. e. Meteorites fall most often through the ozone hole above the South Pole.
What is the braneworld theory?
A) the theory of the inflationary epoch of the universe that happened in its early stages B) the idea that extra dimensions exist around us but we are confined to a membrane with just three spatial dimensions C) the idea that scientists can accomplish anything if they use their brains D) the theory that worlds like Earth were created right at the moment of the Big Bang, and that strings connect them even at present E) the idea that many different worlds exist in an infinite universe
A body in a room at 300 K is heated to 3,000 K. The amount of energy radiated each second by the body increases by __________
Fill in the blank(s) with correct word
A Hooke's law spring is compressed 12.0 cm from equilibrium and the potential energy stored is 52.0 J. What is the spring constant in this case?
a. 7 220 N/m b. 3 610 N/m c. 72.2 N/m d. 0.722 N/m e. No answer is correct.