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Pani-rosa [81]
2 years ago
12

An ice skater wins a competition. Flowers are thrown on the ice rink to celebrate. The ice skater picks up a 0.3

Physics
1 answer:
Serga [27]2 years ago
3 0

Answer:

i speak english

Explanation:

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What galaxies would you most likely find at the center of a large cluster of galaxies?
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A large elliptical galaxy

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4 years ago
3. Atmospheric pressure is often given in units of millimeters of mercury. This refers to the height of a mercury column above t
gregori [183]

Answer:

101397.16 pa

Explanation:

The pressure recorded will be equal to pgh

Where p = density of mercury = 13.6x10^3 kg/m^ 3

g = acceleration due to gravity 9.81 m/s^2

h = height of mercury in the column = 760 mm = 760x10^-3 m

Pressure = 13.6x10^3 x 9.81 x 760x10^-3 = 101397.16 pa

6 0
3 years ago
The number of vacancies in some hypothetical metal increases by a factor of 6 when the temperature is increased from 1070 K to 1
allochka39001 [22]

Answer:

The answer to the question is

The energy (in kJ/mol) for vacancy formation assuming that the density of the metal remains the same over this temperature range is 3.41165×10⁻²² kJ/mol

Explanation:

To solve the question, we note that the Boltzmann equation for vibrational states is

\frac{N_{1} }{N_0} =e^{\frac{-dE}{kT} } Where

N₀ = Population of the lower energy state

N₁ = Population of the upper energy state

ΔE = dE = The energy difference between the two states

k = the Boltzmann constant and

T  = Kelvin temperature

Therefore we have

6N_e ^{(\frac{-Q_v }{k(1070)})} = N_e ^{(\frac{-Q_v }{k(1160)}) }\\

From which

6 =  \frac{N_e ^{(\frac{-Q_v }{k(1160)}) }}{N_e ^{(\frac{-Q_v }{k(1070)})}}\\  

6 =  \frac{e ^{(\frac{-Q_v }{k(1160)}) }}{e ^{(\frac{-Q_v }{k(1070)})}}\\

6 =  e ^{{(\frac{-Q_v }{k(1160)}) }{{+(\frac{Q_v }{k(1070)})}}}

ln(6) =  {{(\frac{-Q_v }{k(1160)}) }{{+(\frac{Q_v }{k(1070)})}}}

Q_v =\frac{ ln(6) }{{(\frac{1 }{k(1160)}) }{{+(\frac{1 }{k(1070)})}}}

Therefore

Q_v = 3.41165×10⁻²² kJ/mol

7 0
3 years ago
Who were the subjects in the monster study
Illusion [34]

Answer:

I think Science,Math and Social

4 0
3 years ago
Read 2 more answers
Why can't a transformer operate on a DC signal<br>​
likoan [24]

Answer:

Transformers do not allow DC input to flow through. This is known as DC isolation. This is because a change in current cannot be generated by DC

Explanation:

Hope this helps

7 0
2 years ago
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