The relationship between the number of visible spectral lines are identical for atoms .However they have unique wavelengths.
Option B
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Explanation:</u>
A spectrum is a range of frequencies or a range of wavelengths. The photon energy of the emitted photon is equal to the difference between two states. For every atom there are quite many electron transitions and each has a energy difference.
This difference in wavelength causes spectrum .As each element emission spectrum is unique because each atom has different energy and causes uniqueness in the emission spectrum . Hence, due to the difference in energy it emits different wavelengths.
A man pushes a couch across the room is the answer!
Answer:
Phasor
Explanation:
A phasor is usually referred to as a rotating vector which has scaled lines. A vector quantity is one which has both magnitude and direction.
Since a phasor is also a vector quantity it has the magnitude and direction in the form of quantity and displacement. The quantity and displacement are usually measured in a counterclockwise direction.
Phasors is used in the engineering world to establish relationships between AC quantities and the parameters such as current and voltage etc.
Answer:
To every action there is an equal and opposite reaction
Answer:
8.5 feet.
Explanation:
A sketch of the position of the three people gives a right angled triangle. The hypotenuse of the triangle gives the resultant displacement, while the two other sides are 6 feet each.
The resultant displacement, R, is the overall displacement covered by the doctor. This can be determined by;
R =
where: = 6 feet and = 6 feet.
Thus,
R =
=
R = 8.49
The resultant displacement covered by the doctor is 8.5 feet.