If the wavelength of sound is increased by a factor of 3, what happens to its speed and frequency?
1.Its speed increases by a factor of 3, and so does its frequency.
2.Its frequency increases by a factor of 3, but the speed stays the same.
3.Its frequency decreases by a factor of 3, but its speed stays the same.
4.Its speed decreases by a factor of 3, and so does its frequency.
3
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Current: What current is flowing in a wire if 0.67 C of charge pass a point in the wire in 0.30 s?
A. 2.2 A B. 0.67 A C. 0.30 A D. 0.20 A
Long-period comets are believed to come from the ______________
Fill in the blank(s) with correct word
The development of physics prior to 1900 is called
a. classical physics. b. neoclassical physics. c. Galilean physics. d. ancient physics.
Why does Michael Jordan appear to defy gravity as he slam dunks the ball? (After you have thought about this question, see page 68 of your textbook.)
a. He is an extraordinary athlete who is able to jump much higher than most humans. b. His motion is that of a projectile, and a projectile's motion is such that its vertical speed is minimal while at the high point of its trajectory. c. He is able to use air resistance to cushion his vertical motion. d. He is in the process of moving upward. e. His horizontal motion keeps him above the ground.