A 0.40-m radius automobile tire accelerates from rest at a constant 2.0 rad/s2 over a 5.0 s interval. What is the tangential component of acceleration for a point on the outer edge of the tire during the 5.0-s interval?
a. 33 m/s2
c. 0.60 m/s2
b. 0.80 m/s2
d. 0.30 m/s2
B
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The antinode of a standing wave represents a point of
A. no motion B. maximum motion
A vertically polarized beam of light of intensity 100 W/m2 passes through two polarizers. The first polarizer is making an angle of 20° with its transmission axis and the second one is making an angle of 40° with its transmission axis
What is the transmitted intensity of this beam of light? A) 22.2 W/m2 B) 44.4 W/m2 C) 66.6 W/m2 D) 78.0 W/m2 E) 11.7 W/m2
Which of the following statements about various stages of core nuclear burning (hydrogen, helium, carbon, and so on) in a high-mass star is not true?
A) Each successive stage creates an element with a higher atomic number and atomic mass number. B) As each stage ends, the reactions that occurred in previous stages continue in shells around the core. C) Each successive stage lasts for approximately the same amount of time. D) As each stage ends, the core shrinks and heats further.
The dimensionless dielectric _________is the magnitude of the polarization of the dielectric material divided by the surface-charge density of a vacuum capacitor.
Fill in the blank(s) with the appropriate word(s).