Which of the following sequences of electromagnetic radiation is correct in order of increasing energy?
a. Gamma rays, X-rays, infrared, radio
b. Radio, microwave, gamma rays, UV
c. Visible, UV, X-rays, gamma rays
d. Visible, microwave, radio, infrared
e. Infrared, visible, radio, X-rays
C
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Galaxies sometimes have recession speeds that deviate somewhat from the exact speed predicted by Hubble's law. What do these so-called peculiar velocities reveal?
A) velocities due to the gravitational tugs of nearby galaxies or clusters of galaxies B) deviations in the rate at which the universe has been expanding at different times in the past C) These velocities indicate serious discrepancies with Hubble's law and with our view of an expanding universe. D) These velocities indicate that the expansion rate differs for different directions in space.
A flux of 4 × 10-5 Wb is maintained through a coil for 0.5 s. What emf is induced in this coil by this flux?
A) No emf is induced in this coil. B) 2 × 10-5 V C) 8 × 10-5 V D) 6 × 10-5 V E) 4 × 10-5 V
A combination of one or more fundamental units is called a(n) ______________ unit
Fill in the blank(s) with correct word
A lens of focal length 90 mm is used as a magnifier by a person with a near point of 25 cm. The object being viewed is 9.9 mm long, and is positioned at the focal point of the lens
What is the angle subtended by the image at infinity, in milliradians? A) 110 mrad B) 73 mrad C) 37 mrad D) 147 mrad E) 183 mrad