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Nana76 [90]
3 years ago
8

Radio waves travel at a speed of 300,000,000 m/s.

Physics
1 answer:
garik1379 [7]3 years ago
8 0

Answer:

<h2>3.06 m</h2>

Explanation:

The wavelength of KQFC’s radio wave can be found by using the formula

\lambda =  \frac{v}{f}  \\

v is the velocity

f is the frequency

Fromthe question we have

\lambda =  \frac{300000000}{97900000}  =  \frac{3000}{979}  \\  = 3.064351...

We have the final answer as

<h3>3.06 m</h3>

Hope this helps you

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3 years ago
Calculate the energy of the green light emitted, per photon, by a mercury lamp with a frequency of 5.49 × 1014 hz.
Tcecarenko [31]
The energy of a photon is given by
E=hf
where
h=6.6 \cdot 10^{-34} Js is the Planck constant
f is the frequency of the photon

In our problem, the frequency of the light is 
f=5.49 \cdot 10^{14}Hz
therefore we can use the previous equation to calculate the energy of each photon of the green light emitted by the lamp:
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8 0
3 years ago
A man can jog 10 miles in 90 minutes. What’s his speed in mph?
Yuki888 [10]

Answer:

hi there!

the correct answer to this question is: 6.67 mph

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you convert minutes to hours

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7 0
3 years ago
If the mass of the products measured 120 g, what would be the mass of the reactants? 30 g 60 g 120 g 240 g
Tanya [424]

Answer:

The correct answer option is C

Explanation:

In a balanced chemical reaction mass of the reactant are always equal to mass of the products. Also known as Law of Conservation of Mass  which states that " mass can nor be created nor be destroyed in a chemical reaction."

So, the mass of the reactant will be equal to the mass of products.That is 120 grams.

Hence, the correct answer option(C).

3 0
3 years ago
Read 2 more answers
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