3 years ago

Wanda has a cube of sugar. She crushes it into a powder. What has changed about the sugar?

2 answers:

5 0

Mass always stays the same therefore it can’t be c and d. Volume stays the same because she is not removing anything. Therefore it is a

NikAS [45]3 years ago

5 0

Answer: A

Explanation:

Shape because mass and volume always stay the same.

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v_{1fy} = - 0.4549 m / s

Explanation:

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3 years ago

Because weight is a measurement of the amount of gravity pulling on an object, weight is considered a ______. Question 18 option

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2 years ago

If two charged objects in a laboratory are brought to a distance of 0.22 meters away from each other. What is

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Answer:

$q_2=2.47\times 10^{-4}\ C$

Explanation:

The charge on one object, $q_1=9.9\times 10^{-5}\ C$

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The force between the charges, F = 4,550 N

Let q₂ is the charge on the other sphere. The electrostatic force between two charges is given by the formula as follows :

$F=\dfrac{kq_1q_2}{r^2}\\\\q_2=\dfrac{Fr^2}{kq_1}\\\\q_2=\dfrac{4550\times (0.22) ^2}{9\times 10^9\times 9.9\times 10^{-5}}\\\\q_2=2.47\times 10^{-4}\ C$

So, the charge on the other sphere is $2.47\times 10^{-4}\ C$ .

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3 years ago

11. A 3.8 kg object is lifted 12 meters. Approximately how much work is performed during the lifting?

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3 years ago

Determine the total amount of heat, in joules, required to completely vaporize a 50.0-gram sample of h2o(?) at its boiling point

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In order to calculate the amount of energy required, we must first check the latent heat of vaporization of water from literature. The latent heat of vaporization of any substance is the amount of energy required per unit mass to convert that substance from a solid to a liquid. For water this is 2,260 J/g. We now use the formula:
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Q = 50 * 2,260
Q = 113,000 J

113,000 Joules of heat energy are required.

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3 years ago