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2 years ago

True or False. The Electromagnetic Spectrum can be described in terms of wave energy, frequency, and wavelength.

1 answer:

5 0

True, because energy, frequency, and wavelength are all properties of sound, and sound is an electromagnetic wave. The electromagnetic spectrum encompasses a continuous range of frequencies or wavelengths of electromagnetic radiation, ranging from long wavelength, low energy radio waves to short wavelength, high frequency, high energy gamma rays.

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Please help there are a few questions but I will give brainliest to first person who answers all of them! Thank you!!!!!!!!!!!!!

viva [34]

Step-by-step explanation:

1. 57 degrees

2. B

3. 117 degrees

4. C

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3 years ago

What is the surface area of the regular pyramid? What is the surface area of a square pyramid with a height of 10.4 m and a base

Zigmanuir [339]

Answer:

A. 141.4 cm

Step-by-step explanation:

The piramide is 141.4cm

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3 years ago

Add 3 feet 6 inches +8 feet 2 inches +4 inches +2feet 5 inches

enyata [817]

You will just get 18 feet 3inches or 18.3 feet

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2 years ago

Read 2 more answers

I don't know the answer please help

KatRina [158]

I had this question today. I believe its either D or C, but my friend told me it was D. So, I think it's D. I hoped if this helped you or not. If you get it wrong Im very sorry so it would've been C.

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3 years ago

A car is traveling at 47 mph. If its tires have a diameter of 27 inches, how fast are the car's tires turning? Express the answe

Amiraneli [1.4K]

Answer:

3676.44 rad/min

Step-by-step explanation:

It is a problem about the angular speed of the car's wheel.

You can calculate the angular speed by using the following formula, which relates the tangential speed of the wheels (the same as the speed of the car) with the angular speed:

$\omega=\frac{v}{r}$ ( 1 )

v: speed of the car = tangential speed of the wheels = 47mph

r: radius of the wheels = 27/2 in = 13.5 in

you change the units of the speed:

$47mph*\frac{63360in}{1mille}*\frac{1h}{60min}=49632\frac{in}{min}$

next, you replace the values of v and r in the equation (1):

$\omega=\frac{v}{r}=\frac{49632in/min}{13.5in}=3676.44\frac{rad}{min}$

Then, the car's tires are turning with an angular speed of 3676.44 rad/min

8 0

2 years ago