Wave Characteristics: Which one of the following lists gives the correct order of the electromagnetic waves from longer wavelength to shorter wavelength?
A. radio waves, infrared, microwaves, ultraviolet, visible, x-rays, gamma rays
B. radio waves, ultraviolet, x-rays, microwaves, infrared, visible, gamma rays
C. radio waves, microwaves, visible, x-rays, infrared, ultraviolet, gamma rays
D. radio waves, microwaves, infrared, visible, ultraviolet, x-rays, gamma rays
E. radio waves, infrared, x-rays, microwaves, ultraviolet, visible, gamma rays
Answer: D
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White-dwarf supernovae are good standard candles for distance measurements for all the following reasons except which?
A) All white-dwarf supernovae involve the explosion of stars of nearly the same mass. B) White-dwarf supernovae are so bright that they can be detected even in very distant galaxies. C) White-dwarf supernovae are common enough that we detect several every year. D) White-dwarf supernovae occur only among young and extremely bright stars. E) All white-dwarf supernovae have similar light curves, which makes them easy to distinguish from massive-star supernovae.
The greater amount of substance in a solution is generally called the
a. salt. b. solute. c. molar concentrate. d. solvent.
A long nonconducting cylinder (radius = 12 cm) has a charge of uniform density (5.0 nC/m3) distributed throughout its volume. Determine the magnitude of the electric field 15 cm from the axis of the cylinder
a. 20 N/C b. 27 N/C c. 16 N/C d. 12 N/C e. 54 N/C
Would you expect the wire temperature to be greater or less for a number 18 copper wire as compared to a number 14 copper wire, both conducting the same electrical current?
What will be an ideal response?