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luda_lava [24]
3 years ago
12

PLEASE HELP TIMED

Physics
2 answers:
Igoryamba3 years ago
5 0

Radio waves have longer wavelengths and lower frequencies than microwaves.

infrared is longer wavelengths and lower frequencies than UV light

sasho [114]3 years ago
3 0

Answer: 1. Radio waves have longer wavelengths and lower frequencies than microwaves.

2. Infrared light has a lower frequency and longer wavelength than ultraviolet light.

Explanation:

Electromagnetic waves are waves which can travel through the vacuum. electromagnetic waves have electrical and magnetic component associated with them. They all travel with the speed of light.

Radio waves, micro waves, infra red and ultraviolet are all electromagnetic waves.

The relationship between wavelength and frequency of the wave follows the equation:

\nu=\frac{c}{\lambda}

where,

\nu = frequency of the wave

c = speed of light  

\lambda = wavelength of the wave

From the above relation, it is visible that wavelength and frequency follow inverse relation. For increase in wavelength, the value of frequency decreases and vice-versa.

Thus, for higher wavelength, the electromagnetic wave will also have lower frequency.

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A kite is 100m above the ground. if there are 200m of string out what is the angle between the string and the horizontal? (assum
jeka57 [31]

Answer :  The angle between the string and the horizontal is 30 degrees

Explanation:  Imagine this a a triangle where the length of the string (200m) is the hypotenuse and the height of the kite is the opposite side (100m) .

Let the angle between the string and the horizontal be theta.

Now  sin (Theta) = opposite side/hypotenuse

                             =  100/200 = 1/2

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8 0
3 years ago
Problems - Show all work.
Fittoniya [83]

Answer:

21s

Explanation:

Given parameters;

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Unknown:

Period  = ?

Solution:

To solve this problem, use the expression:

      v  = \frac{2\pi r}{T}  

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T is the unknown

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4 0
2 years ago
An electric iron is connected to the mains power supply of 220 V. When the electric iron is
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Answer:

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R = 220/1.63

R = 134.96ohms

For maximum heating case:

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Pmax = VI

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