A ball starts from rest and accelerates at a constant rate of 1.0m/s to a final velocity of
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Answer:
laser wavelength = 549.5 nm
Explanation:
Given data
separation d = 0.170 mm = 0.170 × m
interference pattern distance D = 4.95 m
two adjacent bright interference width w = 1.60 cm = 1.60 × m
to find out
laser's wavelength
solution
we know that fringe width formula that is
width = wavelength × distance / separation
we put all these value here to find wavelength
wavelength = 1.60 × × 0.170 ×
/ 4.95
wavelength = 549.5 nm
so laser wavelength = 549.5 nm
Answer:
Conservation of energy
Explanation:
The first law of thermodynamics is given by :
Here,
Q is amount of heat added to the system
is change in internal energy
W is amount of work done by the system
It is clear that the energy can be neither created nor destroyed, it remains conserved. Hence, first law of thermodynamics shows that conservation of energy.