3 years ago

In which way does blue light change as it travels

Physics

2 answers:

____ [38]3 years ago

7 0

Blue light changes as it travels from diamond into crown glass at its speed increases.

rodikova [14]3 years ago

5 0

The refractive index of diamond is greater than that of crown glass.

By $n=\frac{c}v=\frac{\text{speed of light in void}}{\text{speed of light in medium}}$ , we get that <span>(4) Its speed increases.</span>

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A 3.00-kg model airplane has velocity components of 5.00 m/s due east and 8.00 m/s due north. What is the plane’s kinetic energy

GalinKa [24]

Answer:

Kinetic energy, E = 133.38 Joules

Explanation:

It is given that,

Mass of the model airplane, m = 3 kg

Velocity component, v₁ = 5 m/s (due east)

Velocity component, v₂ = 8 m/s (due north)

Let v is the resultant of velocity. It is given by :

$v=\sqrt{v_1^2+v_2^2}$

$v=\sqrt{5^2+8^2}=9.43\ m/s$

Let E is the kinetic energy of the plane. It is given by :

$E=\dfrac{1}{2}mv^2$

$E=\dfrac{1}{2}\times 3\ kg\times (9.43\ m/s)^2$

E = 133.38 Joules

So, the kinetic energy of the plane is 133.38 Joules. Hence, this is the required solution.

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