Physics: Ahorizontal cylindrical tank 8.00 ft in diameter is half full of oil (60.0 ib/ft3). find the force on one end

Ahorizontal cylindrical tank 8.00 ft in diameter is

Ответ:

ltorline123

02.01.2022

Physics

Assuming h as the height of the cylindrical tank

$F=480\pi h \,g\,\, \frac{lb}{ft}$

Explanation:

Assuming that the height is we can find the volume of the cylindrical tank, then:

$V=\pi*r^2*h$

The diameter is 8.00 ft then r=4.00 ft the total volume of the tank is:

$V=\pi (4.00 ft)^2 h=16\pi h\,\, ft^2$

But the tank is half full of oil, then we need half of the volume. For that reason the volume of oil is:

$V_{oil}=\frac{16\pi h}{2}ft^2=8\pi h \,\,ft^2$

We know the density of the oil $\rho=60.0\,lb/ft^3$ , with this we can fing the mass of oil that we have because:

$\rho=\frac{m}{V}$ then $m=\rho V$

Then the mass of oil that we have is:

$m=(60.0\frac{lb}{ft^3})(8\pi h\,\,ft^2)$

$m=480\pi h \frac{lb}{ft}$

Note that with the value of h we have the mass in correct units.

Finally to find the force we now that F=mg then we just need to multiply the mass by the gravity.

$F=480\pi h \,g\,\, \frac{lb}{ft}$

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Ответ:

carlchang2025

17.10.2021

Physics

Number one a and b are automatically out if you decrease the pitch or frequency you wont hear it louder it does not add up ok?
number 2 the answer would be C the higher the frequency the higher the pitch the lower the frequency the lower the pitch this just comes back to common sense. for example you cant decrease the frequency and than expect a louder pitch its like saying I am going to smash the key on this piano with all my strength and it will make a small very low pitch sound you get what I mean so your answer would indeed be C.

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Ahorizontal cylindrical tank 8.00 ft in diameter is half full of oil (60.0 ib/ft3). find the force on one end

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