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tino4ka555 [31]
3 years ago
10

I need help on a it all please

Physics
1 answer:
Akimi4 [234]3 years ago
7 0

your answer is the letter (b)


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2) A ray of light in air is approaching the boundary with water at an
KiRa [710]

Answer:

Explanation:

ASSUMING the 52° is the angle of incidence measured from the perpendicular to the surface

          n₁sinθ₁ = n₂sinθ₂

          1 sin52 = 1.33sinθ₂

                  θ₂ = arcsin(sin52 / 1.33)

                  θ₂ = 36°

as measured from the perpendicular to the surface

5 0
3 years ago
An astronaut with a mass of 91 kg is 0.30 m above the moons surface. The astronauts potential energy is 46 J. Calculate the free
Blababa [14]

Answer:

the free-fall acceleration on the moon is 1.68 m/s^2

Explanation:

recall the formula for the gravitational potential energy (under acceleration of gravity "g"):

PE = m * g * h

replacing with our values for the problem:

46 J = 91 * g * 0.3

solve for the "g" on the Moon:

g = 46 / (91 * 0.3)

g = 1.68  m/s^2

3 0
2 years ago
An electric motor draws out 5 A of current from a 20 V battery. How much power is it using?
irinina [24]

Answer:

Explanation:

P = VI = 20(5) = 100 W

7 0
3 years ago
Read 2 more answers
¿Cuál es el parámetro que indica la cantidad de energía liberada en un movimiento sísmico?
artcher [175]

Answer:

Explanation:

en un movimiento sísmico?

3 0
2 years ago
I need the answer for both of the questions please
Lady_Fox [76]
But even more pain on pain and then pain and pain ya feel me and even more pain okay and yes more pain
5 0
3 years ago
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