Answer:
Explanation:
a ) Refractive index (μ ) = Sin i / Sin r
i is angle of incidence = 30.2 and r is angle of refraction = 18.5 degree
μ = Sin 30.2 / sin 18.5 = 0.5030 / .3173 = 1.585.
b ) Wave length in a medium = wavelength in air / refractive index
= 632.8 / 1.585 = 399.24 nm.
c ) frequency in solution = frequency in vacuum
=
= 47 x 10¹³ Hz
d ) Speed in the solution = Speed in vacuum / Refractive index
=
= 1.893 x 10⁸ ms⁻¹.
Answer:
1,600 to 1,700 kilocalories per day
Explanation:
Answer:
500km per hour
Explanation:
if in 2 hours the airplane flies 1000 km then 1000 divided by 2 is 500km per hour.
1. It will take 0.45 s for the bowling ball to fall 1 m
2. it will take 0.45 s for the ping pong ball to fall 1 m
<h3>Data obtained from the question</h3>
From the question given above, the following data were obtained:
- Height (h) = 1 m
- Acceleration due to gravity (g) = 9.8 m/s²
- Time (t) =?
<h3>How to determine the time taken to fall</h3>
The time taken for the bowling ball to fall can be obtained as illustrated below:
h = ½gt²
1 = ½ × 9.8 × t²
1 = 4.9 × t²
Divide both side by 4.9
t² = 1 / 4.9
Take the square root of both side
t = √(1 / 4.9)
t = 0.45 s
Thus, it will take 0.45 s for the bowling ball to fall.
Considering the ping pong ball, it will also take 0.45 s to fall 1 m since the same gravity is acting on it
Learn more about motion under gravity:
brainly.com/question/22719691
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