3 years ago

PLEASE HELP MEEE!!! QUESTION 3

Physics

1 answer:

siniylev [52]3 years ago

7 0

2 is the answer so mark it

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Springfield's "classic rock" radio station broadcasts at a frequency of 102.1 mhz. what is the length of the radio wave in meter

Mila [183]

The frequency of the radio wave is:
$f=102.1 MHz = 102.1 \cdot 10^6 Hz$

The wavelength of an electromagnetic wave is related to its frequency by the relationship
$\lambda= \frac{c}{f}$
where c is the speed of light and f the frequency. Plugging numbers into the equation, we find
$\lambda= \frac{3 \cdot 10^8 m/s}{102.1 \cdot 10^6 Hz}= 2.94 m$
and this is the wavelength of the radio waves in the problem.

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3 years ago

A chemical change means a new substance with new properties was<br> formed.<br> True<br> False

Contact [7]

Answer:

False

Explanation:

4 0

3 years ago

A traditional set of cycling rollers has two identical, parallel cylinders in the rear of the device that the rear tire of the b

mars1129 [50]

Answer:

ω2 = 216.47 rad/s

Explanation:

given data

radius r1 = 460 mm

radius r2 = 46 mm

ω = 32k rad/s

solution

we know here that power generated by roller that is

power = T. ω ..............1

power = F × r × ω

and this force of roller on cylinder is equal and opposite force apply by roller

so power transfer equal in every cylinder so

( F × r1 × ω1) ÷ 2 = ( F × r2 × ω2 ) ÷ 2 ................2

ω2 = $\frac{460\times 32}{34\times 2}$

ω2 = 216.47

8 0

3 years ago

Can somebody tell me what time is it

kodGreya [7K]

Answer:

8:21am

Explanation:

I hate stupid school

5 0

2 years ago

Read 2 more answers

I NEED HELP ASAP PLEASE!!!!!

Gre4nikov [31]

Answer:

answer is 2 option because more force is applied

6 0

2 years ago