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jek_recluse [69]
3 years ago
5

If the frequency of an electromagnetic wave is too high or too low. A) It cannot be seen. B) It is no longer a wave. C) It is no

longer an electromagnetic wave. D) It becomes a sound wave
Physics
1 answer:
CaHeK987 [17]3 years ago
7 0
If the frequency of an electromagnetic wave is too high or too low : C. It is no longer an electromagnetic wave
If the frequency is too high or too low,  the skin depth pf the electromagnetic wave will not be comparable to the plasma length

hope this helps
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A freight train rolls along a track with considerable momentum. If it were to roll at the same speed but had twice as much mass,
fomenos

Answer:

The momentum would be doubled

Explanation:

The magnitude of the momentum of the freight train is given by:

p=mv

where

m is the mass of the train

v is its speed

In this problem, we have that the speed of the train is unchanged, while the mass of the train is doubled:

m'=2m

therefore, the new momentum is

p'=m'v=(2m)v=2(mv)=2p

so, the momentum has also doubled.

7 0
3 years ago
If you are watching TV programs from 3:50AM-5:30AM for how much hour you are watching
andreev551 [17]

Answer:

You would be watching tv for 1 hour and 40 mins

Explanation:

How much time take it take for 3:50 am to 5:30

6 0
3 years ago
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It takes you 8.3 min to walk with an average velocity of 1.6 m/s to the north from the bus stop to the museum entrance. How far
Anarel [89]

solution:

1.6 m/s = 96 m/min (in other words, 1.6 m/s x 60 s/min)  

96 m/min x 8.3 min = 796.8 m

s=ut +\frac{1}{2}at^2\\there is no accleration mentioned so,\\s= uv\\8.3\times60=498(s)\\510\times1.6=816(m)


3 0
3 years ago
Why a drop of spirit on the hand feels colder than a drop of water at the same temperature​
brilliants [131]

Answer:

This is because spirit has a lower boiling point when compared to water

Explanation:

spirit has a lower boiling point when compared to water which means it has the capacity to pull more heat from your hand and also it can do this very fast. This is why our hand feels colder.

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2 years ago
Question 29 of 43
liraira [26]
I agree with the first responses
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