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Readme [11.4K]
4 years ago
9

Why a reference point must be stationary?

Physics
1 answer:
Over [174]4 years ago
5 0
If the reference point is stationary, you can ensure that the distance between the point you are studying and the reference point is constant.
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Two sound waves, A and B, are traveling at the same speed. Wave A has a wavelength of 50 cm and a frequency of 7000 Hz. Wave B h
vekshin1

Answer:

D. 100 cm

Explanation:

The speed of a wave is the wavelength times the frequency.

v = λf

Wave A and B have the same speed, so:

λf = λf

(50 cm) (7000 Hz) = λ (3500 Hz)

λ = 100 cm

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3 years ago
Why do windows of distant houses appear to reflect the sun only when rising or setting
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Which of the following forms of vegetation would probably appear first on the bare rocks
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3 years ago
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What is the escape velocity on the Venus ? Venus' mass 4.90*10^ 24 kg and radius is 6.86 * 10 ^ 6 * m
gtnhenbr [62]

The escape velocity on Venus is 9761 m/s

Explanation:

The escape velocity from a planet is the speed that an object on the surface of that planet must have in order to completely escape the gravitational field of the planet.

Mathematically, it is calculated as

v=\sqrt{\frac{2GM}{R}}

where

G is the gravitational constant

M is the mass of the planet

R is the radius of the planet

For Venus, we have:

M=4.90\cdot 10^{24}kg is the mass

R=6.86\cdot 10^6 m is the radius

Substituting, we find the escape velocity on Venus:

v=\sqrt{\frac{2(6.67\cdot 10^{-11})(4.90\cdot 10^{24})}{6.86\cdot 10^6}}=9761 m/s

Learn more about velocity:

brainly.com/question/5248528

#LearnwithBrainly

8 0
3 years ago
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