Muons at speed 0.9994c are sent round and round a circular storage ring of radius 1500 m. If a muon at rest decays into other particles after an average T = 2.2 × 10^-6 s, how many trips around the storage ring do we expect the 0.9994c muons to make before they decay?
a. 2
c. 0.2
b. 4
d. 6
A
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An organ pipe is 60.0 cm long and is open at one end and closed at the other. The frequency of the third mode is 300 Hz higher than the frequency of the second mode. What is the velocity of sound?
A. 280 m/s B. 300 m/s C. 320 m/s D. 340 m/s E. 360 m/s
The force on your left palm is __________ the force on your right palm
Fill in the blank(s) with correct word
We can see other people because people
A) emit thermal radiation. B) emit visible light. C) emit infrared light. D) reflect visible light. E) reflect infrared light.
In the Doppler effect for electromagnetic waves, which of the following gives the greatest shift in frequency?
a. the source moving toward the non-moving observer at speed v b. the observer moving toward the non-moving source at speed v c. the source moving toward the approaching observer, both at speed v /2 d. All of the above give the same shift.