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kogti [31]
4 years ago
9

What is the transfer of energy by electromagnetic waves

Physics
2 answers:
koban [17]4 years ago
8 0
Hey there

The answer you are looking for is "electromagnetic reaction."

Hope it helped!
Ann [662]4 years ago
3 0
The transfer of energy by electromagnetic waves is called electromagnetic radiation
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A negatively charged particle is attracted to
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B. posititvely charged particles

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In 1976, the SR-71A, flying at 20 km altitude (T = –56 0C), set the official jet-powered aircraft speed record of 3530 km/hr (21
Lapatulllka [165]

To solve this problem we will apply the concepts related to the calculation of the speed of sound, the calculation of the Mach number and finally the calculation of the temperature at the front stagnation point. We will calculate the speed in international units as well as the temperature. With these values we will calculate the speed of the sound and the number of Mach. Finally we will calculate the temperature at the front stagnation point.

The altitude is,

z = 20km

And the velocity can be written as,

V = 3530km/h (\frac{1000m}{1km})(\frac{1h}{3600s})

V = 980.55m/s

From the properties of standard atmosphere at altitude z = 20km temperature is

T = 216.66K

k = 1.4

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Velocity of sound at this altitude is

a = \sqrt{kRT}

a = \sqrt{(1.4)(287)(216.66)}

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Ma = \frac{V}{a}

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Ma = 3.312

So front stagnation temperature

T_0 = T(1+\frac{k-1}{2}Ma^2)

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T_0 = 689.87K

Therefore the temperature at its front stagnation point is 689.87K

6 0
3 years ago
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