How dense the medium is in the compression part of the wave, and how

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Answer 1

Answer: How dense the medium is in the compression part of the wave and how rare the medium is in the rarefaction part of the wave is a measure of the longitudinal wave's amplitude.

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The earth has a circumference of about 25000 miles. How is it expressed in scientific notation?

Answers

2.5 * 10^4 miles

Yay!!!

The magnetic north pole changes location but the geographic north pole does not true or false

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The North Magnetic Pole is the point on the surface of Earth's Northern Hemisphere at which the planet's magnetic field points vertically downwards (in other words, if a magnetic compass needle is allowed to rotate about a horizontal axis, it will point straight down). There is only one location where this occurs, near (but distinct from) the Geographic North Pole and the Geomagnetic North Pole. So yes true

A man carries a 12-kg chair up one flight of stairs to the second floor of his house. If the second floor is 3.3 m above the first floor, what is the change in the gravitational potential energy of the chair? a - 180 J b + 390 J c + 180 J d - 390 J e zero

Answers

Answer:

Change in gravitational potential energy of the chair is, $\Delta PE=390\ J$

Explanation:

It is given that,

Mass of the chair, m = 12 kg

Distance of the second floor from the ground, h = 3.3 m

The position of ground at h = 0

Let $\Delta PE$ is the change in gravitational potential energy of the chair. Initial potential f the chair is equal to 0.

$\Delta PE=mgh$

$\Delta PE=12\ kg* 9.8\ m/s^2* 3.3\ m$

$\Delta PE=388.08\ J$

$\Delta PE=390\ J$

So, the change in the gravitational potential energy of the chair is 390 joules.

Final answer:

The change in gravitational potential energy of the chair is +385 J.

Explanation:

The change in gravitational potential energy of the chair can be calculated using the formula ΔPE = mgh, where m is the mass of the chair, g is the acceleration due to gravity, and h is the change in height. In this case, the mass of the chair is 12 kg, the acceleration due to gravity is 9.8 m/s², and the change in height is 3.3 m. Plugging these values into the formula, we get ΔPE = (12 kg)(9.8 m/s²)(3.3 m) = 384.72 J. Therefore, the change in gravitational potential energy of the chair is approximately +385 J.

Learn more about gravitational potential energy here:

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What are minerals made of a single element called?

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Minerals of a single element are called Native elements. These include gold, silver, copper, etc. They can be divided into three groups such as metals, semi-metals, and nonmetals. Hope this helped.

Air is forced through the water to remove gases is called?

Answers

The process through which air is forced through water to remove gases is called aeration. Aeration is often used as a major step in water treatment plants to remove unwanted gases such as carbon dioxide, odors, and other impurities in water. The process also allows dissolved metals such as iron to oxidize.

Answer:

d. aeration

Explanation:

Which of the following is not a type of pulley systemA fixed
B movable
C combination
D advantageous

Answers

D advantageousA pulley is a wheel on an axle or shaft that is designed to support movement and change of ... The drive element of a pulley system can be a rope, cable, belt, or chain that runs over the pulley.

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