When you approach a light source that in turn is moving towards you, your speed relative to the emitted light waves _____.?
2 answers:
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Answer:
Explanation:
Given data
To find
Magnitude of the net magnetic field B
Solution
The magnitude of the net magnetic field can be find as:
The tangential speed of an orbiting object is
Explanation:
The tangential speed of an orbiting object is defined as the ratio between the distance covered in one revolution and the period of revolution:
where
d is the distance covered during one period
T is the orbital period
However, the distance covered during one period is the circumference of the circle:
where
r is the radius of the circle
Substituting the 2nd equation into the 1st equation, we find:
So, this is the final expression for the tangential speed of an orbiting object.
Learn more about circular motion:
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Answer:
Air kerma
Explanation:
The acronym for the word 'kerma' is . It is the sum or the total of the kinetic energies of the
that is liberated by the uncharged ionizing radiation in the small sample of a matter, and is divided by the mass of that sample.
It is sometimes used for expressing the radiation concentration that is delivered to a point.
It is used to specify the intensity of the x-rays for any given point in the air at some known distance form the local spot. The total air kerma can be monitored in the fluoroscopic procedure.