Answer:
1.45
Explanation:
Refractive index of the liquid is given as;
Refractive index =
But,
speed =
Since a certain light of specific wavelength was used during the same time, let the time be represented by t.
So that;
speed of light in vacuum =
speed of light in the liquid =
Refractive index = ÷
= x
Refractive index =
= 1.4536
= 1.45
The refractive index of the liquid is 1.45.
Answer:
Nothing
Explanation:
The radius of the orbit of the Earth does not depend on the radius of the sun.
In fact, the gravitational attraction between the Earth and the Sun provides the centripetal force that keeps the Earth in orbit:
where
G is the gravitational constant
M is the mass of the sun
m is the mass of the Earth
r is the radius of the orbit of the Earth
v is the orbital speed of the earth
Re-arranging the equation for r:
Also,
where is the angular velocity of the Earth's orbit. So we can rewrite the equation as
As we see, the radius of the orbit of the Earth, r, does not depend on the mass of the Sun, so if the sun shrank in size, the orbit remains the same.
The frequency will not change
<h3><u>Answer;</u></h3>
Smooth muscles
<h3><u>Explanation</u>;</h3>
- Smooth muscles are the muscles that cause blood vessels to dilate and constrict. Smooth muscles forms the supporting tissues of the blood vessels and hollow internal organs such as intestines, bladder, etc.
- Hormones such as vasopressin and Norepinephrine trigger the contraction of smooth muscles and thus constricting the blood vessels.
- When these hormones production is stopped then the smooth muscles will relax and thus dilating the blood vessels.
<span>
The rate of bullets per minute = 6000 per minute
= 6000/6 per sec
=10 bullets per sec
as we know
F=n * m * v
=10 . 200 . 25 .10^-3
= 2N</span>