You know that there are 1609 meters in a mile. The number of feet in a mile is 5280. How many centimeters equals one inch

1 answer:

4 0

Hello there, and thank you for posting your question here on brainly.

Short answer: 2.54

Why?

No explanation needed.

Hope this helped you! ♥

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If you tie a rope to a tree and move it up and down, you are creating what kind of wave?

loris [4]

This is called a standing wave since the waves don't move ALONG the rope. They just kind of stand in one place on the rope. if you just whip a long rope that's not tied to anything, you see the wave move along the rope, this is a TRANSVERSE wave. When you crack a qhip you send a transverse wave down the whip which concentrates in the tip, accelerating the tip to faster than the speed of sound resulting in a tiny sonic boom or "whip crack".

4 0

3 years ago

The fulcrum of a uniform 20-kg seesaw that is 4.0 m long is located 2.5 m from one end. A 30-kg child sits on the long end. Part

uranmaximum [27]

Answer:

57 kg

Explanation:

Mass of seesaw = 20 kg

Length of seesaw = 4 m

Mass of child on the longer end = 30 kg

The weight of the seesaw acts at the center i.e. 2m

The algebraic sum of moments of all forces about any point is zero, hence, using the fulcrum as the reference point:

[x * 9.8* 1.5] - [20 * 9.8* (2.5 - 2)] - [30 * 9.8 * 2.5] = 0

=> 14.7x = (20*9.8*0.5) + 735

14.7x = 98 + 735

14.7x = 833

=> x = 833/14.7

x = 57 kg

7 0

3 years ago

I want to examine the surface of a planet which is completely covered by a thick layer of clouds all the time. What wavelength o

Mars2501 [29]

The electromagnetic radiation that will be smartest to use is gamma rays.

<h3>Electromagnetic radiation</h3>

These are waves that does not require material medium for their propagation.

The wave with high frequency has a greater rate of penetration while those with high wavelength has lesser rate of penetration.

Thus, it will be smart to use the wave with high frequency, which means a low wavelength. The electromagnetic radiation with the highest frequency and low wavelength is gamma rays.

Learn more about electromagnetic radiation here: brainly.com/question/25847009

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2 years ago

The fastest airplane is the Lockheed SR-71. If an SR-71 flies 15.0 km west in 15.3 s, what is its average velocity in kilometers

Lady_Fox [76]

Answer:

3529 km/h west

Explanation:

The average velocity is given by:

$v=\frac{d}{t}$