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Yakvenalex [24]
3 years ago
6

In what ways are sound waves and electromagnetic waves different?

Physics
1 answer:
Veseljchak [2.6K]3 years ago
8 0
Choice-A is a false statement, and the other three choices are absurdly untrue and physically impossible. None of the choices is an applicable response to the question.
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What characteristics would an Earth-like planet need to have to support life?
kirza4 [7]

Answer:

water, air, vegetation, and light. also a good temperature thats not too hot or too cold

Explanation:

8 0
4 years ago
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What is the velocity of an electron that has a de Broglie wavelength approximately the length of a chemical bond? Assume this le
melomori [17]

Answer : The velocity of an electron is, 6.1\times 10^{6}m/s

Explanation :

According to de-Broglie, the expression for wavelength is,

\lambda=\frac{h}{p}

and,

p=mv

where,  

p = momentum, m = mass, v = velocity

So, the formula will be:

\lambda=\frac{h}{mv}       .............(1)

where,

h = Planck's constant = 6.626\times 10^{-34}Js

\lambda = wavelength  = 1.2\times 10^{-10}m

m = mass  of electron = 9.11\times 10^{-31}kg

v = velocity of electron = ?

Now put all the given values in formula 1, we get:

1.2\times 10^{-10}m=\frac{6.626\times 10^{-34}Js}{(9.11\times 10^{-31}kg)\times v}

v=6.1\times 10^{6}m/s

Thus, the velocity of an electron is, 6.1\times 10^{6}m/s

6 0
3 years ago
With no effort at all, you'll have deep and lasting relationships.<br> True<br> False
Firdavs [7]
The correct answer is false
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3 years ago
How many times can mechanical energy become chemical energy
maria [59]

Answer:

Chemical energy, Energy stored in the bonds of chemical compounds. Chemical energy may be released during a chemical reaction, often in the form of heat; such reactions are called exothermic.

3 0
3 years ago
A car starts at zero and gets to 50 km/hour in 10 minutes. What is the initial velocity?
gladu [14]
The initial velocity is the speed and direction of the car at the beginning
of the event. 

You just said that the car "starts at zero".  You might mean that it starts at
"location zero".   But then you go on to tell us its speed after 10 minutes,
so it sounds like the "zero" at which it starts is zero speed.

In that case, its initial velocity is zero.

6 0
3 years ago
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