Coherent light with wavelength 490 nm passes through two very narrow slits that are separated by 0.200 mm, and the interference
1 answer:
Double slit diffraction has a convenient formula for this of
Where s is the distance between the fringes, w is the wavelength (should be lambda but this website doesnt seem to like it in the formula construction box), D is the distance slit to screen, and d is the distance between the centres of the two slits.
Substituting this all in:
Where s is the distance between the fringes, w is the wavelength (should be lambda but this website doesnt seem to like it in the formula construction box), D is the distance slit to screen, and d is the distance between the centres of the two slits.
Substituting this all in:
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The velocity of the red ball after the collision is 5.8 m/s
Explanation:
In absence of external forces on the system, we can apply the principle of conservation of momentum. The total momentum of the system must be conserved before and after the collision, so we can write:
where:
is the mass of the pool ball
is the initial velocity of the pool ball
is the final velocity of the pool ball
is the mass of the red ball
is the initial velocity of the red ball
is the final velocity of the red ball
Solving the equation for v2, we find the final velocity of the red ball after the collision:
Learn more about collisions:
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