If a source of light is approaching us at 3,000 km/sec, then all its waves are:
A) blue shifted by 1%.
B) redshifted by 1%.
C) not affected, as c is constant regardless of the direction of motion.
D) blue shifted out of the visible spectrum into the ultraviolet.
E) redshifted out of the visible into the infrared.
A
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Solenoid: An ideal solenoid of length 10 cm consists of a wire wrapped tightly around a wooden core. The magnetic field strength is 4.0 T inside the solenoid. If the solenoid is stretched to 25 cm by applying a force to it, what does the magnetic field become?
A. 1.6 T B. 10.0 T C. 20 T D. 4.0 T
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Suppose that an object is moving with constant acceleration. Which of the following is an accurate statement concerning its motion?
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