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3 years ago

What is the basic unit of matter? atom cell bacterium molecule Description

Physics

2 answers:

lutik1710 [3]3 years ago

7 0

Im pretty sure the basic unit of matter is an Atom

Zielflug [23.3K]3 years ago

6 0

The atom is the most basic unit of matter

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Identify the wavelength of this wave.

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Answer:

Explanation:

The line(A) goes throughout the entire picture. So therefore choice A would be it's length.

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3 years ago

Does changing position of charges change the magnitude

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No, they will not change.

Explanation:

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3 years ago

An 75-kg hiker climbs to the summit of Mount Mitchell in western North Carolina. During one 2.0-h period, the climber's vertical

Ostrovityanka [42]

Answer:

The change in gravitational potential energy of the climber-Earth system is $\Delta PE = 396900 \ J$

Explanation:

From the question we are told that

The mass of the hiker is $m = 75 \ kg$

The time taken is $T = 2 \ hr = 2 * 3600 = 7200 \ s$

The vertical elevation after time T is $H = 540 \ m$

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$\Delta PE = mgH$

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$\Delta PE = 75 * 9.8 * 540$

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3 years ago

If a planet has the same mass as the earth, but has twice the radius, how does the surface gravity, g, compare to g on the surfa

shepuryov [24]

Answer:

The surface gravity g of the planet is 1/4 of the surface gravity on earth.

Explanation:

Surface gravity is given by the following formula:

$g=G\frac{m}{r^{2}}$

So the gravity of both the earth and the planet is written in terms of their own radius, so we get:

$g_{E}=G\frac{m}{r_{E}^{2}}$

$g_{P}=G\frac{m}{r_{P}^{2}}$

The problem tells us the radius of the planet is twice that of the radius on earth, so:

$r_{P}=2r_{E}$

If we substituted that into the gravity of the planet equation we would end up with the following formula:

$g_{P}=G\frac{m}{(2r_{E})^{2}}$

Which yields:

$g_{P}=G\frac{m}{4r_{E}^{2}}$

So we can now compare the two gravities:

$\frac{g_{P}}{g_{E}}=\frac{G\frac{m}{4r_{E}^{2}}}{G\frac{m}{r_{E}^{2}}}$

When simplifying the ratio we end up with:

$\frac{g_{P}}{g_{E}}=\frac{1}{4}$

So the gravity acceleration on the surface of the planet is 1/4 of that on the surface of Earth.

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3 years ago

Select the correct answer. Which of the following causes air pollution inside the house? A. Smoking cigarettes B. Growing housep

Troyanec [42]

Answer: Smoking cigarettes

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2 years ago

Read 2 more answers