The Big Bang is a theory describing the ____
a. birth of our Solar System
b. start of civilization on Earth
c. beginning of planet formation
d. beginning of the Universe
e. massive extinction of dinosaurs
d
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Diffraction Gratings: A 17-mm-wide diffraction grating has rulings of 530 lines per millimeter. White light is incident normally on the grating. What is the longest wavelength that forms an intensity maximum in the fifth order?
A. 377 nm B. 352 nm C. 402 nm D. 427 nm E. 452 nm
Light travels fastest
A) in a vacuum. B) through water. C) through glass. D) through plastic. E) through diamond.
Amir drives his ATV from coordinates (5.0 km, 25°) directly to (25.0 km, 45°) in 45 minutes. What is the ATV's speed?
a. 0.5 km/h b. 20.4 km/h c. 27.2 km/h d. 34.0 km/h
When a ferromagnetic material that has been magnetized is brought to a temperature greater than the Curie temperature, what happens to its residual magnetism
a. Nothing happens to the residual magnetism. b. The residual magnetism disappears. c. The residual magnetism reaches it's highest value. d. All the magnetic domains causing magnetism become a single domain. e. The material of the magnet melts causing currents that are magnetic.