A 0.30-m-radius automobile tire accelerates from rest at a constant 2.0 rad/s2 . What is the centripetal acceleration of a point on the outer edge of the tire after 5.0 s?
a. 300 m/s2
b. 33 m/s2
c. 30 m/s2
d. 3.0 m/s2
c
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A 10-cm focal length converging lens is used to magnify small newspaper print 2.0 mm high. Calculate the height of the image (in mm) for the maximum magnification for a normal eye.
A. 3.5 B. 7.0 C. 9.2 D. 12 E. 2.5
Meteors are
a) asteroids or comet debris that passes into Earth's atmosphere and burns up b) a group of rocky objects between the orbits of Jupiter and Saturn c) comets that are vaporized when they pass very close to the Sun d) comets that escape the Solar System without being vaporized by the Sun e) a group of rocky objects between the orbits of Mars and Jupiter
This graph shows a gravitational wave signal recorded by the gravitational wave detectors (called LIGO) in two locations. What do models indicate was the cause of this signal?
A) the merger of two black holes in a distant galaxy B) a supernova in a distant galaxy C) the sudden explosion of an entire galaxy D) an x-ray burst on the surface of a neutron star
A wave pulse traveling to the right along a thin cord reaches a discontinuity where the rope becomes thinner and lighter. What is the orientation of the reflected and transmitted pulses?
A) Both pulses are right side up. B) The reflected pulse returns right side up while the transmitted pulse is inverted. C) The reflected pulse returns inverted while the transmitted pulse is right side up. D) Both pulses are inverted.