The sound waves emanating from a loud event are traveling through the air at 352

Question

The sound waves emanating from a loud event are traveling through the air at 352 m/s. If another event occurs that is only one-half as loud, how fast will its sound waves travel through the same air?

_______m/s


Which of the following will create a MAGNETIC FIELD? Choose all that apply.
A) A neutrino that is speeding up from 1000 m/s to 1200 m/s.
B)An electron moving in a circle while traveling at a constant speed of 20 in/min.
C)An ion moving at a constant velocity of 60 mph due north.
D)A neutron that is slowing down from 500 km/h to 400 km/h.
E)A proton that is stationary.

Explanation / Answer

For the first part, I would think still 352 m/s no matter how loud the sound is. As long as the medium it's travelling through is similar, the speed should remain the same.


A magnetic field is created by a moving electric charge. Both the movement and charge must be present for a magnetic field to occur, not just one.
a) No, Neutrinos have no electric charge so no field.
b) Yes, the electron has charge and is moving.
c) Yes, the ion is charged, and is moving.
d) No, the neutron has no charge.
e) No, there is charge but no movement.

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