The first choice Always given to you by other people
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All vibrating bodies produce sounds in molecules of the medium they are as air,wood,water
(a) frequency of the wave
The electromagnetic wave travels at the speed of light:
. Since its wavelength is
, we can find the frequency of the wave by using the relationship between f,
and c:
(b) magnetic field amplitude
The relationship between the electric field amplitude E, the magnetic field amplitude B and the speed of light c for an electromagnetic wave is
And since we know E, by re-arranging the equation we can find the magnitude of B:
Answer:
An inelastic collision, in contrast to an elastic collision, is a collision in which kinetic energy is not conserved due to the action of internal friction. In collisions of macroscopic bodies, some kinetic energy is turned into vibrational energy of the atoms, causing a heating effect, and the bodies are deformed.
Explanation: