Answer:
Explanation:
As we know that the 6 kg object was at rest initially
So here since net force on the system is zero
so the momentum of the system will always remains conserved
so we can say
now we know that
and the angle between the two objects is 60 degree
so we can say
now we can say that the speed of the third mass will be
now the total kinetic energy released in this system is given as
The thickness is 155 nm at t1.
The thickness is 77.3 nm at t2.
The inquiry informs us that the laser light's wavelength is λ=510nm
The plastic rod's refractive index is n=1.30
The transparent coating's refractive index is nr=1.65
Minimum reflection would be required for maximal light transmission into the rod, and it is mathematically described as
2t1=510+10⁻⁹/1.65
t1=510+10⁻⁹/1.65*2
t1=155nm
where m is the interference order, which equals 1.
2t2= {m+1/2} λ/nr
The thickness is t replacing values
t1=155 nm
The highest reflection would occur for minimal light penetration through the rod, and this maximum reflection is mathematically described as
2t2= [m+1/2] λ/nr
t2=77.3 nm
The complete question is- Laser light of wavelength 510 nm is traveling in air and shines at normal incidence onto the flat end of a transparent plastic rod that has n = 1.30. The end of the rod has a thin coating of a transparent material that has refractive index 1.65. What is the minimum (nonzero) thickness of the coating (a) for which there is maximum transmission of the light into the rod; (b) for which transmission into the rod is minimized?
Learn more about reflection here-
brainly.com/question/15487308
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<u>Solution and Explanation:</u>
The following calculation is made in order to find out the area and the final velocity vector.
Using the given information and the data in the question,
m1u1 + m2u2 = (m1 + m2) multiply with v
40000 multiply with ( -20i ) + 60000 multiply with ( 10j ) = 100000 multiply with v
Therefore, v = -8i + 6j
That is |v| = 10 knots towards the 36.86 degree north of the west
Answer:
19 cm sq
Explanation:
you have to count one full and half area occupied by leaf in each box, then you have to multiply with 1 cm sq.
Answer:
The slower the train is moving, the less are the changes of the magnetic flux, thus the eddy currents become weaker.
Explanation:
A magnetic brakes is not a very efficient way of braking when a train is moving slowly because at low speeds, the changes in the magnetic flux are very less and so it causes the eddy current to become weaker.
Let us find the drag force which is proportional to the velocity of two conducting plates.
The EMF that is induced in the eddy currents are : 
The force which is due to the induced magnetic field is, 
Therefore, 
Here, force is directly proportional to the velocity of the two conducting plates.
Therefore, we can say that when the speed of the train is low, the magnetic flux changes are less and thus the eddy currents are weaker.
