Answer:
β 2 = 0.02575 mm
Explanation:
given data
wavelength = 563 nm
separation distance between adjacent bright fringes = 0.0290 mm
wavelength = 500 nm
solution
we get here separation distance between adjacent bright fringes that is express as
β = 
..................................1
here D is distance from plane of slit to screen
and d is slit sepation that is constant
so
β 2 = 
β 2 = 0.02575 mm
Use conservation of momentum.
Initial momentum = 0
Final momentum = momentum of the girl + momentum of the boy = inifial momentum = 0.
Momentum of the girl = - momentum of the boy
mass of the girl * velocity of the girl = - mass of the boy * velocity of the boy
50 kg * velocity of the girl = - 80 kg * 3m/s
=> velocity of the girls = -80 kg * 3m/s / 50 kg = - 4.8 m/s
Answer: - 4.8 m/s
Potential Energy = mgh ,
mass = 1.4 kg, g ≈ 10 m/s², h = 0.8m
Potential Energy = mgh = 1.4 * 10 * 0.8 = 11.2 N
Potential Energy added = 11.2 N
An object with more inertia is both harder to start and to stop. <span>The heavier (or more mass) of the object - harder to start & stop. For instance, a large rock vs. small rock. Large rock harder to get rolling & harder to stop as compared to smaller rocks. Hope this answers the question.</span>
