What is wrong with the following statement: When you exert a force on a baseball, the equal and opposite force on the ball balan
1 answer:
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Answer:
Explanation:
To calculate average velocity we need the position for both instants t0 and t1.
Now we will proceed to calculate all the positions we need:
Replacing these values into the formula for average velocity:
To know the actual velocity, we derive the position and we get:
Answer:
So wavelength in nm will be
Explanation:
We have given that the energy = 207 KJ/mol
Speed of light
Plank's constant
According to plank's rule energy of the photon is given by
So wavelength in nm will be
Answer:
(a) 47.08°
(b) 47.50°
Explanation:
Angle of incidence = 78.9°
<u>For blue light : </u>
Using Snell's law as:
Where,
Θ₁ is the angle of incidence
Θ₂ is the angle of refraction
n₂ is the refractive index for blue light which is 1.340
n₁ is the refractive index of air which is 1
So,
Angle of refraction for blue light = sin⁻¹ 0.7323 = 47.08°.
<u>For red light : </u>
Using Snell's law as:
Where,
Θ₁ is the angle of incidence
Θ₂ is the angle of refraction
n₂ is the refractive index for red light which is 1.331
n₁ is the refractive index of air which is 1
So,
Angle of refraction for red light = sin⁻¹ 0.7373 = 47.50°.