An astromer finds a new absorption
line with λ=164.1nm in the ultraviolet
region of the sun′s continuous spectrum.
He attributes the line to hydrogen′s
Layman series. Is he right? Justify
your answer.
please help.
A 2kg is attached to the end of a vertical wire of length 2m with a diameter of 0.64mm and having an extension of 0.60m.Calculate the tensile strain on the wire(take g=9.8)
A cuboid block is floating in a
liquid with half of its volume
immersed in the liquid.When the
whole system accelerates upwards
with an acceleration of g/3 . The
fraction of volume immersed in
the liquid will be
a)1/2 b)3/8 c)2/3 d)3/4
please help