aaliyahmaile13
13.11.2019 •
Physics
You are standing in your home at the top of your stairs. you have just placed your slinky toy on the top step and have released it to go down the steps. select the correct answer regarding the position of the slinky.
a. the gravitational potential energy of the slinky is increasing while the potential energy remains the same.
b. the gravitational energy of the slinky is decreasing while its potential energy is also decreasing.
c. the gravitational potential energy of the slinky is increasing while its potential energy increases.
d. the gravitational potential energy of the slinky remains the same.
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Ответ:
Ответ:
η₁ = 2.6
Explanation:
Here, we will use snell's law to calculate the refractive of the substance:
where,
η₁ = refractive index of first substance = ?
η₂ = refractive index of second substance = 1.5
θ₁ = angle of incidence = 30°
θ₂ = angle of refraction = 60°
Therefore,
η₁ = 2.6