Why is physics used to study stars?
1 answer:
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The speed of light in a material is given by:
where
is the speed of light in vacuum
n is the refractive index of the material
The lens in this problem has a refractive index of n=1.50, therefore the speed of light in the lens is
And the correct answer is C).
where
n is the refractive index of the material
The lens in this problem has a refractive index of n=1.50, therefore the speed of light in the lens is
And the correct answer is C).
Answer:
True
Explanation:
When a satellite is orbiting the earth, the centripetal force is balanced by the gravitational force as :
...........(1)
Where
M is the mass of the earth
m is the mass of the planet
From equation (1), the speed of the satellite depends only on the mass of the earth and the orbital radius.
So, If a payload of material is added until it doubles the satellite's mass, the earth's pull of gravity on this satellite will double but the satellite's orbit will not be affected. It is true.
Explanation:
It is given that,
Power consumed by toaster oven,
Time taken, t = 6 minutes = 0.1 hour
Energy used by toaster,
Similarly,
Power consumed by toaster oven,
Time taken, t = 9 minutes = 0.15 hour
Energy used by toaster,
Hence, this is the required solution.