When light enters a denser medium, the speed of the light ______________
Fill in the blank(s) with correct word
decreases
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Which of the following processes would be the most likely process for making continuous-fiber composite material for a Formula 1 race car chassis?
(a) Resin transfer molding (b) Vacuum bagging (c) Pultrusion (d) Filament winding
A 20-cm length of wire is held along an east-west direction and moved horizontally to the north with a speed of 3.0 m/s in a region where the magnetic field of the earth is 60 ?T directed 30° below the horizontal. What is the magnitude of the potential difference between the ends of the wire?
A. 36 ?V B. 18 ?V C. 31 ?V D. 24 ?V E. 21 ?V
The negative of the ratio of the strain transverse to an applied force divided by the strain parallel to the applied force is equal to the _____________ratio.
Fill in the blank(s) with the appropriate word(s).
The spectrum of the cosmic microwave background peaks at a wavelength of about 1 mm, and the universe has a temperature of about 3 K. If the spectrum instead peaked at a wavelength of 10 millimeters, what would its temperature be?
A) the same temperature of about 3 K B) less than 3 K C) more than 3 K