Select the statement which is incorrect
1.Laser light is coherent.
2.Laser light is monochromatic.
3.Laser light can be sharply collimated.
4.Laser light always produces a high and potentially dangerous temperature.
4
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While our Milky Way's black hole is not massive enough to have once been quasar, it must have passed through its Seyfert phase by 3.5 billion years ago. Explain how we know this
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Two particles (m1 = 0.20 kg, m2 = 0.30 kg) are positioned at the ends of a 2.0-m long rod of negligible mass. What is the rotational inertia of this rigid body about an axis perpendicular to the rod and through the center of mass?
a. 0.48 kg/m2 b. 0.50 kg/m2 c. 1.2 kg/m2 d. 0.80 kg/m2 e. 0.70 kg/m2
A glowing blackbody that appears bluish in color is __________ than one that appears reddish
Fill in the blank(s) with correct word
A 60.0-Hz AC generator with a peak voltage of 110 V drives a series RL circuit with R = 10.0 ? and L = 10.0 mH. The impedance is
a. 3.77 ?. b. 9.26 ?. c. 10.0 ?. d. 10.7 ?. e. 13.8 ?.