What is the density of a block of marble that occupies 287cm3 and has a mass of 869g?

Answers

Answer 1

Answer: a REALLY helpful thing when doing physics is something called the DMV triangle. So how it works is you look at what you are trying to find, which in this case is density. So you cover the D and look at the remaining M and V. Everything below the M has to be divided, and if you are just left with the D and V then you x them. It’s really simple and easy to use. So you cover up the D, and are left with M and V. So now you have to do Mass divided by Volume. 869g divided by 287cm3 would be 3.02g/cm3

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What is the name of the body part that passes messagesfrom the sensory neurons to the brain?
o Lungs
O Nerve Cells
o Brain
o Stimulus please help me thanks

Answers

The answer would be nerve cells. Hope that helps you!

What happens first when a star begins to run out of Fuel?

Answers

Answer: The star's outer layers drifts away.

Explanation: When a star starts running out of fuel the pressure in the core becomes very high which pushes the outer layers of the star.

A sun like star becomes a red giant and after throwing away the mass, the core contracts to becomes a white dwarf.

A massive star becomes super-giant and then the core becomes a neutron star or a black-hole.

Answer:

The answer is d

Explanation:

How to find wavelength

Answers

Know the formula for calculating wavelength. To find the wavelength of a wave, you just have to divide the wave's speed by its frequency. ...State the formula in correct units. ...Plug the known quantities in the equation. ...Solve.

Answer:

Use the formula v=fλ Divide the velocity by the frequency to find the wavelength. (Make sure you add the unit λ for your final answer)

V: Velocity

F: Frequency

λ: Wavelength

Which molecule does not have a linear molecular shape?
O3
OCN-
Co2
Cs2

Answers

The molecule that doesn't have a linear molecular shape is 03.i.e.Ozone.

The process of photosynthesis is essential in the oxygen/carbon dioxide cycle. Photosynthesis removes ______ from the atmosphere and produces and releases ______ into the atmosphere.A) glucose, oxygen
B) oxygen, glucose
C) carbon dioxide, oxygen
D) oxygen, carbon dioxide

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Photosynthesis removes carbon dioxide from the atmosphere and releases oxygen into the atmosphere. The answer is C.

C) Carbon dioxide is removed and Oxygen is produced and released.

Does a screw change the size of the effort force, the direction of the force, or both?

Answers

Well I'm thinking that it would be both.

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