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faust18 [17]
4 years ago
6

Earth is closest to the sun at a point called

Physics
1 answer:
saveliy_v [14]4 years ago
6 0

Answer:

It is called Perihelion.

Explanation:

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A certain kind of glass has an index of refraction of 1.660 for blue light of wavelength 420 nm and an index of 1.630 for red li
Bogdan [553]

Answer:

Explanation:

Using Snell's law

n₁ sinθ₁ = n₂ sinθ₂

for 420 nm wavelength

where n₁ = 1.00 ( refractive index of air) and θ₁ = 30° n₂ = 1.660

1.00 × sin 30° = 1.660 sinθ₂

sinθ₂ = 0.3012

θ₂ = sin⁻¹ 0.3012 = 17.53°

for 690 nm wavelength

n₁ sinθ₁ = n₂ sinθ₂

sinθ₂ = 0.5 / 1.630

θ₂ = sin⁻¹ 0.3067 = 17.86°

the angle between the two beam = 17.863° - 17.53° = 0.333°

7 0
3 years ago
The average density of living matter on earthâs land areas is 0.10 g/cm2 . what mass of living matter in kilograms would occupy
Margaret [11]
<span>Density is a value for mass, such as kg, divided by a value for volume or area. Density is a physical property of a substance that represents the mass of a certain substance per unit volume or unit area. From the problem statement, we are given the density of the living matter in a particular area and the area. To calculate mass, we simply multiply the area to the density. However, we should remember that the units should be homogeneous or the same and if not, we convert.

Mass = density x area
Mass = 0.10 g / cm^2 (0.125 ha) ( 1x10^8 cm^2 / 1 ha )
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4 0
3 years ago
Light traveling through air strikes the surface of the four different materials shown. Which material reflects light but does no
Elza [17]
It would be{ 4) 2 silver spoons}<span>
that the material reflects light but does not refract it</span>
4 0
3 years ago
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A rubber band that has been stretched has gained ____ energy
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Answer: potential

Explanation:

3 0
4 years ago
Which material is likely to slow the flow of electric charges the most ? explain.
alekssr [168]
Metal as it is a conductor of electricity
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3 years ago
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