Answer:
GO TO H__L..
FILL IN THE BLANKS
<em>FOLLOW</em><em> </em><em>ME</em>
Answer:
Explanation:
First minimum of λa will be formed at 1 x λa D/d distance from the centre where D is distance of screen and d is width of slit.
As per given statement
λa D/d = 2 x λb D/d
λa = 2 x λb
= 2 x 370 nm
= 740 nm
Let ma th order of λa component coincides with mb the order of λb component
ma λa D/d = mb λb D/d
ma / mb = λb / λa
ma / mb = 1/ 2
mb = 2 ma
if ma = 4
mb = 8
if ma = 5
mb = 10
Answer:
0.729 meters
Explanation:
d=(V0)t+(1/2)at^2
d=height of shelf
a=9.8 m/s^2 (acceleration due to gravity)
V0=0 m/s (initial downward velocity)
t=0.38586 seconds (1.173 meters/3.04 m/s)
Answer: C. Expanding
Explanation:
When an object moves away from an observer, the light waves emitted by the object are stretched out making them have move towards the red end of the electromagnetic spectrum, where light has a longer wavelength. This phenomenon is known as the redshift (cosmological redshift). For most astronomical objects, the observed spectral lines are all shifted to longer wavelengths. It is caused solely by the expansion of the Universe and thus, the value of a redshift indicates the recession velocity of the expanding object, or its distance.
Redshift is opposed to the blueshift. Blue light wavelengths tend to be closer together hence blueshift light tends to be emitted from objects that are collapsing.
