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salantis [7]
3 years ago
15

All of the following are electromagnetic waves except

Physics
1 answer:
irga5000 [103]3 years ago
3 0
B. sound waves
Sound<span> waves need to </span>travel<span> through a medium such as a solid, liquid, or gas. The </span>sound waves move through each of these mediums by vibrating the molecules in the matter. This means it isn't an electromagnetic waves but it is a wave, an example of the difference, all electromagnetic waves can travel in a vacuum at the universal speed limit, this is <span>299 792 458 m/s.</span>


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The barometer of a mountain hiker reads 930 mbars at the beginning of a hiking trip and 780 mbars at the end. Neglecting the eff
lara31 [8.8K]
We could use the change of pressure to calculate for the height climbed by the mountain hiker. The change of pressure is given by

p = rho * g * h, where p is the change of pressure, rho is the air density, g is the acceleration due to gravity, and h is the height.

Using the conversion 1 mbar = 100 Pa,

(930 - 780)(100) = (1.20)(9.80)h
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h = 1.28 km
6 0
4 years ago
A student gathered two boxes of the same size made of different materials glass and clear plastic. She placed them on a windowsi
ch4aika [34]

Answer:

dependent variable

Explanation:

8 0
3 years ago
9. Which of the following statements is true about scientific theories?
AleksAgata [21]
I think the correct answer from the choices listed above is option D. Scientific theories summarize patterns found in nature. Although, the statement scientific theories are never proven is somewhat true. They are either disproved or they are never disproved. Hope this answers the question.
6 0
3 years ago
Read 2 more answers
15 points. give me the method.
AveGali [126]

Answer:

\boxed{{160 \:  m(s)}^{ - 1} }

Explanation:

if \:the \:  frequencies \: are \to \\   f_{1} =  640Hz  \\ and \\f_{2}   = 480Hz \:  \\ but \:  \boxed{v = f \gamma }:   f =  \frac{v}{ \gamma } \\ if \:  \gamma_{1}  -  \gamma _{2}  = 1 =  \gamma  \\ f_{1}  - f_{2}  = 640 - 480 = \boxed{ 160Hz} = f \\ v = f \gamma = 160 \times 1 =  \boxed{{160 \:  m(s)}^{ - 1} }

5 0
3 years ago
A force of 16.88 N is applied tangentially to a wheel of radius 0.340 m and gives rise to an angular acceleration of 1.20rad / (
Basile [38]

Given.

force = 16.88 N is

radius = 0.340m

an angular acceleration = 1.20rad/s^2

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F*r = I*a

where I is moment of inertia

16.88*.34 = I*1.2

I = 4.78Kg-m^2

so rotational inertia I = 4.78Kg-m^2

7 0
3 years ago
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