Which has the larger kinetic energy, a 50-kg person running at a speed of 2 m/s, or a 5-g nickel falling at a speed of 200 m/s?
A. The running person
B. The falling nickel
C. Both have about the same kinetic energy.
C. Both have about the same kinetic energy.
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Intensity of Sound: By how many decibels does the intensity level of a sound increase when you triple the intensity of a source of sound?
A. 9.5 dB B. 4.8 dB C. 6.0 dB D. 3.0 dB E. 12 dB
Bree dips a pair of prongs onto a water surface and produces waves. When she dips more frequently the resulting waves
A) have shorter wavelengths. B) remain the same in wavelength. C) have longer wavelengths. D) move faster. E) none of the above
A hydrogen atom is in the 6h state. What is the principal quantum number
A) 0 B) 3 C) 5 D) 6 E) 7
To be dimensionally consistent, velocity [L/T], acceleration and time [T] must be related as follows.
a.
b.
c.
d.