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Vlad1618 [11]
3 years ago
13

Choose one. 5 points

Physics
2 answers:
Mariana [72]3 years ago
4 0

Answer:

It would be 4,6E14.

Explanation:

nikklg [1K]3 years ago
3 0
Is 4,6E14 Hz
Good luck
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A piece of aluminum has a volume of 1.50 10-3 m3. the coefficient of volume expansion for aluminum is β = 69 ✕ 10-6 (°c)-1. the
Alex17521 [72]

Answer:

W = 3.12 J

Explanation:

Given the volume is 1.50*10^-3  m^3 and the coefficient of volume for aluminum is β = 69*10^-6 (°C)^-1. The temperature rises from 22°C to 320°C. The difference in temperature is 320 - 22 = 298°C, so ΔT = 298°C. To reiterate our known values we have:

β = 69*10^-6 (°C)^-1       V = 1.50*10^-3  m^3       ΔT = 298°C

So we can plug into the thermal expansion equation to find ΔV which is how much the volume expanded (I'll use d instead of Δ because of format):

dV = \beta V_{0} dT\\dV = (69*10^{-6})( C)^{-1} * (1.50*10^{-3})m^{3} * (298)C\\dV = 3.0843*10^-5

So ΔV = 3.0843*10^-5 m^3

Now we have ΔV, next we have to solve for the work done by thermal expansion. The air pressure is 1.01 * 10^5 Pa

To get work, multiply the air pressure and the volume change.

W = P * dV = (1.01 * 10^5)Pa * (3.0843*10^{-5})m^3\\W = 3.115143J

W = 3.12 J

Hope this helps!

4 0
3 years ago
Match the object with its characteristic.
Triss [41]
What object do you need to match
8 0
3 years ago
Which will produce a magnetic field?
Yanka [14]

Answer:

Answer:

a magnet

3 0
3 years ago
What is your mass in kilograms?
SIZIF [17.4K]

Answer:

Take whatever you weigh in pounds and divide by 2.205.

Explanation:

Because weight is a measure of the force you exert on the earth, with some simple manipulation of Newton's second law we can get your mass in kilograms. 2.205 is just a nice constant that does that for you, but the more in-depth version is that

F = ma

The equation for weight is thus

W = mg, where W is your weight in pounds, m is your mass, and g is the acceleration due to gravity (9.80 m/s^2)

Thus, your mass in kilograms is m = W / g.

3 0
3 years ago
Another name for continuous uniform circular motion is___?
VikaD [51]
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3 years ago
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