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Gekata [30.6K]
3 years ago
7

David runs 100 m in a time of 9.80 s. Calculate his average speed. State the unit.

Physics
1 answer:
fiasKO [112]3 years ago
3 0

Answer:

His average speed is 980 units

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The wavelengths of visible light vary from about 300 nm to 700 nm. What is the range of frequencies of visible light in a vacuum
exis [7]

The range of frequencies  of visible light in a vacuum is mathematically given as

Fmin=4.19*10^14Hz  to Fmax=1*10^15Hz

<h3>What is the range of frequencies of visible light in a vacuum?</h3>

Question Parameters:

The wavelengths of visible light vary from about 300 nm to 700 nm.

Generally, the equation for the frequency   is mathematically given as

F=C/\lambda

Therefore

For Fmax

Fmax=\frac{300*10^8}{3*10^9}

Fmax=1*10^15Hz

Where

Fmin=\frac{3*10^8}{700*10^9}

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For more information on Wave

brainly.com/question/3004869

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2 years ago
A meteroid is in a circular orbit 600 km above the surface of a distant planet. the planet has the same mass as Earth but has a
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Well, the answer to this question is D) 10 m/s^2 in the direction of the meteoroids motion.
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6 0
2 years ago
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The average radial velocity of galaxies in the Hercules cluster is 10,800 km/s. (a) using H0 = 73 km/s/Mpc, find the distance to
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Answer:

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Given that:

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Also using H_o = 73 km/s/ Mpc ; we  make distance d the subject of the formula:

Then distance d can be written as:

d = \frac{v}{H_o}

d = \frac{10,800  \ km/s}{73 \ km/s/Mpc}

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b)

Now, if the Hubble constant had a smaller value, then for a  given velocity the distance to the galaxy will increase because distance d is inversely proportional to H_o

i.e  

d  ∝ \frac{1}{H_0}

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Answer:

I think it's D

Explanation:

because I have seen the tracks of the tires

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Which of the following describes what all electromagnetic waves have in common?
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They all move through empty space at the speed of light
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