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love history [14]
3 years ago
9

Give an example of how you could use different reference frames for the same motion.

Chemistry
2 answers:
RUDIKE [14]3 years ago
8 0

Answer:

Motion is defined as a change of position. How we perceive motion depends on our frame of reference. Frame of reference refers to something that is not moving with respect to an observer that can be used to detect motion.

Explanation:

NikAS [45]3 years ago
3 0
Motion is basically just movement in different frames. The person above is better at explaining lol
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The gasses in a hair spray can are at temperature 300k and a pressure of 30 atm, it
Sergeeva-Olga [200]

Answer:

900 K

Explanation:

Recall the ideal gas law:

\displaystyle PV = nRT

Because only pressure and temperature is changing, we can rearrange the equation as follows:
\displaystyle \frac{P}{T} = \frac{nR}{V}

The right-hand side stays constant. Therefore:

\displaystyle \frac{P_1}{T_1} = \frac{P_2}{T_2}

The can explodes at a pressure of 90 atm. The current temperature and pressure is 300 K and 30 atm, respectively.

Substitute and solve for <em>T</em>₂:

\displaystyle \begin{aligned} \frac{(30\text{ atm})}{(300\text{ K})} & = \frac{(90\text{ atm})}{T_2} \\ \\ T_2 & = 900\text{ K}\end{aligned}

Hence, the temperature must be reach 900 K.

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3 years ago
5.Explain how to convert the mass of a substance into mole
shepuryov [24]

Answer:

............................................

6 0
3 years ago
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Which of the following is an expression of Charles's law?
HACTEHA [7]

Answer:

C.

Explanation:

V/T

4 0
3 years ago
A chemical compound in which ions are held together in a lattice structure by ionic bonds
ehidna [41]

Answer:

Ionic compounds contain ions and are held together by the attractive forces among the oppositely charged ions

Explanation:

Common salt (sodium chloride) is one of the best-known ionic compounds. Molecular compounds contain discrete molecules, which are held together by sharing electrons (covalent bonding).

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3 years ago
Determine which physical conditions are necessary to support nuclear fusion and formation of stars.
Ilia_Sergeevich [38]

Answer:

Promotes Stellar Formation:

-Increased Gravitational Attraction

-Higher Temperature

Does Not Promote Stellar Formation:

-Decreased Gravitational Attraction

-Lower Temperature

Explanation:

Stars need at least three million kelvins to form, and the gravitational attraction helps form the star in the first place.

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3 years ago
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