All categories

4 years ago

How big/small can radio waves be?

Physics

1 answer:

Volgvan4 years ago

4 0

Answer:

Radio waves have the longest wavelengths in the EM spectrum, according to NASA, ranging from about 0.04 inches (1 millimeter) to more than 62 miles (100 kilometers).

Band Frequency range Wavelength range

Very Low Frequency (VLF) 3 to 30 kHz 10 to 100 km

Low Frequency (LF) 30 to 300 kHz 1 m to 10 km

Explanation:

You might be interested in

Which design will have the highest Kinetic Energy when released? (read the details in the image)

Dovator [93]

Answer:nevis design because it has the most surface area

Explanation:

because it has the most surface area

3 0

4 years ago

A friend of yours is loudly singing a single note at 412 Hz while racing toward you at 23.0 m/s on a day when the speed of sound

kobusy [5.1K]

Doppler Effect is required to solve the problem. The Doppler effect is the change in the perceived frequency of any wave movement when the emitter, or focus of waves, and the receiver, or observer, move relative to each other. The general formula of observed frequency, due to Doppler's effect is as follows,

$f_0 = (\frac{v+v_0}{v-v_s})f_s$

$f_0$ = Frequency observed by observer

v = Velocity of Sound

$v_0$ = Velocity of observer

$v_s$ = Velocity of source

$f_s$ = Frequency of source

PART A) Replacing our values we have that,

$f_0 = (\frac{v+v_0}{v-v_s})f_s$

$f_0 = (\frac{344+0}{344-23})(412)$

$f_0 = 441.52Hz$

PART B) Here the same procedure is performed but this time repeated in the opposite direction.

$f_0 = (\frac{v+v_0}{v-v_s})f_s$

$f_0 = (\frac{344+23}{344-0})(420)$

$f_0 = 448.08Hz$

4 0

3 years ago

If it takes a P wave five minutes to travel from the epicenter to a seismic station, approximately how long will it take an S wa

jok3333 [9.3K]

It take approximately 9 minutes for an S wave to travel that same distance that P wave travel in 5 minutes.

P waves, are the first waves to arrive at a seismograph.

An S wave, or shear wave, is a seismic body wave that shakes the ground back and forth perpendicular to the direction the wave is moving.

S-wave is about 1.73 times slower than the P-wave.

To learn more about P and S waves here

brainly.com/question/26489416

#SPJ2

3 0

2 years ago

Read 2 more answers

g Initially, the motorcycle travels along a straight road with a speed of 35 m/s (this is almost 80 mph). The maximum decelerati

astraxan [27]

Given:

Initial speed of the motorcycle (u) = 35 m/s

Final speed of the motorcycle (v) = 0 m/s (Complete Stop)

Maximum deceleration of the motorcycle (a) = -1.2 m/s²

Required Equation:

$\boxed{\bf{ v = u + at}}$

Answer:

By substituting values in the equation, we get:

$\rm \longrightarrow 0 = 35 + ( - 1.2)t \\ \\ \rm \longrightarrow 0 = 35 - 1.2t \\ \\ \rm \longrightarrow 35 - 1.2t = 0 \\ \\ \rm \longrightarrow 35- 35 - 1.2t = 0 - 35 \\ \\ \rm \longrightarrow - 1.2t = - 35 \\ \\ \rm \longrightarrow \dfrac{ - 1.2t}{ - 1.2} = \dfrac{ - 35}{ - 1.2} \\ \\ \rm \longrightarrow t = 29.167 \: s$

$\therefore$ Time taken by motorcycle to come to a complete stop (t) = 29.167 s

4 0

3 years ago

Please help im being timed on this and need to get my grade up

nadya68 [22]

Answer:

a I think hope this helps

8 0

3 years ago