When equipment or motors need to be operated momentarily for inching, what's the ideal circuit to use?
1 answer:
You might be interested in
Answer:
The equations are:
C. 2t=(m+12)λn(m=0,1,2,...) for constructive interference. (Here is a mistake in this equation i.e. m + 12 (wrong) and m + 1/2 (correct)). So, the correct equation for constructive interference is:
2t = (m + 1/2) λ n (m=0,1,2,...)
D. 2t=mλn(m=0,1,2,...) for destructive interference.
Explanation:
Constructive Interference occurs when two waves’ crests or troughs add together therefore, the resulting wave amplitude is equal to the sum of the each wave amplitude (in this case the amplitude of each wave is of same charge).
Destructive Interference occurs when a waves’ crest and trough cancel each other therefore, the resulting wave amplitude is zero (in this case the amplitude of each wave is oppositely charged).
When the refractive index of the medium in which the light travels is lower than the refractive index of the thin film medium then a 180° phase shift occurs.
When the light wave strikes the top surface of thin film, the wave reflects from the top surface and the reflecting light wave shifts by half of wavelength i.e. λ/2
When the light wave strikes the bottom surface of thin film then the light wave does not shift however, the light cover extra distance (2t), reflecting from the bottom surface to travel back to air.
Since, oil has refractive index (n = 1.5) which is higher than the refractive index of air (n = 1) so, when light wave strikes on the top surface of thin film of oil, the reflecting wave will shift by λ/2 (because nair < noil) and when light wave strikes on the bottom surface of thin film of oil, it will cover an extra distance to travel back to air and no wavelength shift will occur (because noil > nair).
In light of the above situation, the constructive interference of light reflected from the thin oil film is:
2t = (m + 1/2) λ n
The destructive interference of light reflected from the thin film is:
2t = m λ n
Answer:0.5
Explanation:
Given
Piece of taffy slams in to sticks to another identical piece and stuck into it.
Let m be the mass of taffy and u be the initial velocity of taffy and v be the final velocity of system.
Conserving momentum
Initial kinetic energy
Final Kinetic Energy
change in kinetic energy
change in kinetic energy will contribute in heat energy
thus fraction of kinetic energy converted in to heat