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marishachu [46]

3 years ago

6

When vibrational motion in an object increases, which is a true statement?

2 answers:

Verdich [7]3 years ago

8 0

Answer:

The answer is A

Explanation:

zubka84 [21]3 years ago

6 0

A -..................................is the correct option

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One anthem of silicon can properly be combined in a compound with

Darya [45]

One atom of silicon can properly be combined in a compound withtwo atoms of oxygen to produce silicon dioxide because silicon is very similar to carbon, as it is in the same group as carbon is in, therefore, it is able to make four bonds.
Moreover, Silicon has 4 valence electrons. In order to form an ionic bond, silicon<span> would have to gain or lose 4 electrons.</span>

4 0

3 years ago

Заряди +10 нКл і +18нКл розташовані на відстані 12 см один від одного.Яка сила діятиме на заряд +2 нКл,який розміщений на прямій

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3 0

3 years ago

A quantity of gas in a piston cylinder has a volume of .362M3(cubed. If the gas is initially at room temperature (20C) and is he

Sav [38]

The final temperature is 34.91°C

<u>Explanation:</u>

<u></u>

Initial volume, V1 = 362m³

Final volume, V2 = 632m³

Initial temperature, T1 = 20°C

Final temperature, T2 = ?

We know,

V1/T1 = V2/T2

362/20 = 632/T2

T2 = 34.91°C

Therefore, the final temperature is 34.91°C

6 0

3 years ago

A proton is trapped in a one-dimensional well that is 200 pm wide. What is the ground state energy of the proton, if the potenti

Harrizon [31]

Answer:

E=1.50\times 10^{-18}J

Explanation:

Energy of the one dimensional infinite well,

$E=\frac{n^{2}h^{2} }{8mL^{2} }$

Given that, $L=200 pm\\L=200\times 10^{-12}m$

For the ground state n=1,

Therefore energy is,

$E=\frac{(6.626\times 10^{-34})^{2}}{8(9.1\times 10^{-31})(200\times 10^{-12}) ^{2} }\\E=1.50\times 10^{-18}J$

8 0

3 years ago

A 275-g sample of nickel at 100.0°C is placed in 100.0 mL of water at 22.0°C. What is the final temperature of the water? Assume

Mademuasel [1]

Answer:

39.6138 °C

Explanation:

Heat gain by water = Heat lost by nickel

Thus,

$m_{water}\times C_{water}\times (T_f-T_i)=-m_{nickel}\times C_{nickel}\times (T_f-T_i)$

Where, negative sign signifies heat loss

Or,

$m_{water}\times C_{water}\times (T_f-T_i)=m_{nickel}\times C_{nickel}\times (T_i-T_f)$

For water:

Volume = 100.0 mL

Density of water= 1 g/mL

So, mass of the water:

$Mass\ of\ water=Density \times {Volume\ of\ water}$

$Mass\ of\ water=1 g/mL \times {100.0\ mL}$

Mass of water = 100 g

Initial temperature = 22.0 °C

Specific heat of water = 4.186 J/g°C

For nickel:

Mass = 275 g

Initial temperature = 100 °C

Specific heat of nickel = 0.444 J/gK = 0.444 J/g°C

So,

$100\times 4.186\times (T_f-22.0)=275\times 0.444\times (100-T_f)$

$418.6\times (T_f-22.0)=122.1\times (100-T_f)$

$418.6\times T_f+122.1\times T_f=21419.2$

$T_f=39.6138\ ^{0}C$

Thus,

The final temperature of the combined metals is 39.6138 °C

4 0

3 years ago

Read 2 more answers