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Troyanec [42]
3 years ago
14

Match the term to the correct description.

Physics
2 answers:
Sedaia [141]3 years ago
7 0
1. Proton
2. negative ion
3. electric charge
4. electron
5. repel
6. attract
7. positive ion
Lena [83]3 years ago
6 0
1.Positive
2.Positive Ion
3.Electric charge
4.Electron
5.Repel
6.Attract
7.Negative Ion 

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3 years ago
What is the density of a cube that has a mass of 3.75 g and a volume of 3 mL?
valina [46]

Answer:

\displaystyle \rho=1.25\ g/ml

Explanation:

<u>Density </u>

The density of a substance is the mass per unit volume. The density varies with temperature and pressure.

The formula to calculate the density of a substance of mass (m) and volume (V) is:

\displaystyle \rho=\frac{m}{V}

The cube has a mass of m=3.75 g and a volume of V=3 ml, thus the density is:

\displaystyle \rho=\frac{3.75\ g}{3\ ml}

\boxed{\displaystyle \rho=1.25\ g/ml}

Since 1 kg=1000 mg and 1 lt = 1000 ml, the density has the same value but with different units:

\displaystyle \rho=1.25\ kg/l

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2 years ago
A 4kg block sitting on the floor, how much potential energy does it have?
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Well, there you have a very important principle wrapped up in that question.

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in the coffee shop that's off the lobby on the ground floor. 

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