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Viktor [21]
3 years ago
8

Will Give Brainliest!

Chemistry
2 answers:
Amanda [17]3 years ago
7 0

mass is very wrong i soully believe its magnetism

Lorico [155]3 years ago
5 0

Answer: The correct answer is Magnetism.

Explanation: We are given two samples of iron fillings.

Magnetism: This property remains same for any sample of same element.

Mass: We are given different mass. So, they cannot be same.

Shape: Iron fillings cannot have a definite shape.

Volume: As the density of any element remains same always. As the mass is different, so to have the same density, the volume of two sample will also be different.

Hence, magnetism is the only property that will remain same for the two samples.

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If E=mc^2,solve for both m and c. Also, if m=80 and c=0.40 what is the value of E?
Pie

<u><em>Answer:</em></u>

m = \frac{E}{c^2}

c = \sqrt{\frac{E}{m} }

E = 12.8 J

<u><em>Explanation:</em></u>

<u>Part 1: Solving for m</u>

<u>We are given that:</u>

E = mc²

To solve for m, we will need to isolate the m on one side of the equation

This means that we will simply divide both sides by c²

m = \frac{E}{c^2}

<u>Part 2: Solving for c</u>

<u>We are given that:</u>

E = mc²

To solve for c, we will need to isolate the m on one side of the equation

This means that first we will divide both sides by m and then take square root for both sides to get the value of c

c^2 = \frac{E}{m}\\  \\ c=\sqrt{\frac{E}{m}}

<u>Part 3: Solving for E</u>

<u>We are given that:</u>

m = 80 and c = 0.4

<u>To get the value of E, we will simply substitute in the given equation: </u>

E = mc²

E = (80) × (0.4)²

E = 12.8 J

Hope this helps :)

4 0
3 years ago
A.it is physical change
PIT_PIT [208]
A physical change is when something don't permanently change
5 0
2 years ago
Which agency publishes the food code
Sergeeva-Olga [200]
Food code is like sort of a guide to ensure that the food is presented according decent standards, unadulterated and correctly presented to the customer.
It is published every four years by the " U.S Food and Drug Administration".

4 0
3 years ago
Evidence of a chemical change does NOT include
horrorfan [7]
C is the correct answer for this question. since it is a physical change
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Len [333]

Answer:

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3 0
3 years ago
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