A test tone used on a radio has a frequency of 1,000 Hz. What is the wavelength of this sound in air at normal room temperature? (The speed of sound is 344 meters per second.)
0.344 m
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The primary scientific purpose of a particle accelerator is to
A) create particles and study their behavior. B) make small particles achieve large accelerations. C) produce energy for commercial use. D) make small particles go fast.
The mass of a ball moving at 3 m/s with a momentum of 48 kg m/s is
A) 4 kg. B) 12 kg. C) 16 kg. D) 144 kg. E) none of these
Lisa runs up 4 flights of stairs in 22. seconds. She weighs 510. Newtons. If each flight rises 310. cm:
(a) What is her change in potential? (b) What average power (watts) was required during the 22. s? (c) What minimum horsepower motor would be required to do this?
Which of the following is an indication that one is dealing with a wave property instead of a particle property?
a. energy c. interference b. quanta d. momentum