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ivanzaharov [21]
3 years ago
6

What is the wavelength of an FM radio

Physics
1 answer:
AleksandrR [38]3 years ago
4 0

V = 3.0 x 10⁸ m/s         (This is the same for all types of electromagnetic waves)

f = 88.6 MHz = 8.86 x 10⁷ Hz

λ = ?

V = fλ

λ = V/f = (3 x 10⁸)/(8.86 x 10⁷)

  =  3.4 m     [Ans]

Hope this helps!

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A train starts from rest and travels for 5.0 s with a uniform acceleration of 1.5 m/s2. What is the final velocity of the train?
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Answer:

Final speed of the train is 7.5 m/s

Explanation:

It is given that,

Uniform acceleration of the train is, a = 1.5 m/s²

It starts from rest and travels for 5.0 s. We have to find the final velocity of the train. By using first equation of motion as :

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Here, train starts from rest so, u = 0

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So, the final velocity of the train is 7.5 m/s. Hence, this is the required solution.

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3 years ago
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Reduce friction because friction just makes things harder
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The distance and displacement of a object in motion can be the same (true or false)
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False, the values ​​of the distance traveled and the displacement only coincide when the trayectorie is a straight line. Otherwise, the distance will always be greater than the offset.

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An artillery shell of mass 30 kg has a velocity of 250 m/s vertically upward. The shell explodes into two pieces; immediately af
olga_2 [115]

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9654.34 m

Explanation:

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$$\begin{aligned}30 \times 250 &=-10 \times 120+20 \times V \\20 V &=30 \times 250+10 * 120 \\V &=\frac{30 \times 250+10 \times 120}{20}=435 \mathrm{~m} / \mathrm{s}\end{aligned}$$

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