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Bogdan [553]
3 years ago
6

Which of these activities performed by a chemist is primarily based on an understanding of physics?

Physics
1 answer:
Yanka [14]3 years ago
4 0
Predicting the volume of a gas, given its temperature and pressure p<span>roperties.</span>
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bogdanovich [222]
C. unbalanced is the correct answer for newton's first law.
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3 years ago
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How do objects with the same charge interact? How do objects with opposite charges interact?
Marta_Voda [28]
Objects with the same charge repels each other whereas objects with opposite charges attract each other.

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Un cubo de madera de densidad 0.780 g/cm³ mide 11.2 cm en un lado. Cuando se coloca en agua, ¿qué altura del bloque flotará sobr
Stolb23 [73]

Answer:

2.464 cm above the water surface

Explanation:

Recall that for the cube to float, means that the volume of water displaced weights the same as the weight of the block.

We calculate the weight of the block multiplying its density (0.78 gr/cm^3) times its volume (11.2^3  cm^3):

weight of the block = 0.78 * 11.2^3  gr

Now the displaced water will have a volume equal to the base of the cube (11.2 cm^2) times the part of the cube (x) that is under water. Recall as well that the density of water is 1 gr/cm^3.

So the weight of the volume of water displaced is:

weight of water = 1 * 11.2^2 * x

we make both weight expressions equal each other for the floating requirement:

0.78 * 11.2^3 = 11.2^2 * x

then x = 0.78 * 11.2 cm = 8.736 cm

This "x" is the portion of the cube under water. Then to estimate what is left of the cube above water, we subtract it from the cube's height (11.2 cm) as follows:

11.2 cm - 8.736 cm = 2.464 cm

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3 years ago
Two students push on a 5-kg cart from opposite sides
sweet-ann [11.9K]

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nothing will happen the cart will be broken or as it is

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A —————— error is the perceived shift in a objective position as it is viewed from
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Hi student

Your name ???

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