For a body emitting blackbody radiation, the total power emitted is proportional to the 4th power of the body's absolute temperature: (T in kelvins) and the wavelength of the emitted EM radiation that has the highest intensity is inversely proportional to the body's absolute temperature according to: ( in meters, T in kelvins) Assume an object is emitting blackbody radiation. If the Kelvin
temperature of an object is doubled, the amount of radiant energy emitted each second is ____________ the original amount.
a. 1/16th
b. half
c. the same as
d. 2 times
e. 16 times
e
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The magnitude of the magnetic field at point P for a certain electromagnetic wave is 2.12 ?T. What is the magnitude of the electric field for that wave at P? (c = 3.0 x 108 m/s)
A) 636 N/C B) 7.45 µN/C C) 745 N/C D) 5.23 µN/C E) 6.36 µN/C
The electric potential inside a charged solid spherical conductor in equilibrium
a. is always zero. b. is constant and equal to its value at the surface. c. decreases from its value at the surface to a value of zero at the center. d. increases from its value at the surface to a value at the center that is a multiple of the potential at the surface. e. is equal to the charge passing through the surface per unit time divided by the resistance.
Thin Lenses: A 3.0-cm tall statue is 48 cm in front of a convex lens having a focal length of magnitude 20 cm.(a) Is the image of the statue real or virtual?(b) How far is the image from the lens?(c) Is the image upright or inverted?(d) How tall is the image?
What will be an ideal response?
Collectively, electrons, muons, and neutrinos are called:
A) hadrons. B) baryons. C) photons. D) leptons. E) pions.