Magnesium is a metal that is commonly used in products that needed to be light weight. Suppose a 2.00kg piece of magnesium has 8160 j of entertainment added to it it's temperature increases 4K what is the specific heat of magnesium
Answers
Given that,
Mass of magnesium, m = 2 kg
Heat added to it, Q = 8160 J
Increase in temperature,
To find,
The specific heat of magnesium.
Solution,
Th formula that is used to find the heat required to raise the temperature in terms of specific heat is given by :
So, the specific heat of magnesium is .
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(b) What will the voltmeter read if the dielectric is now pulled partway out so it fills only one-third of the space between the plates?
Answers
(A) 3.9
When a dielectric is inserted between the plates of a capacitor, the capacitance of the capacitor increases according to the equation:
(1)
where
C' is the final capacitance
k is the dielectric constant
C is the original capacitance
The capacitance is inversely proportional to the to voltage across the plates:
(2a)
where Q is the charge stored and V the potential difference across the plates. We can rewrite C' (the capacitance of the capacitor filled with dielectric) as
(2b)
Substituting (2a) and (2b) into (1), we find
(3)
where
V = 45.0 V is the original voltage across the capacitor
V' = 11.5 V is the voltage across the capacitor filled with dielectric
Solving for k,
(B) 22.8 V
When the dielectric is partially pulled away, the system can be assimilated to a system of 2 capacitors in parallel, of which one of them is filled with dielectric and the other one is not.
Keeping in mind that the capacitance of a parallel-plate capacitor is proportional to the area of the plates:
and in this case, the area of the capacitor filled with dielectric is just 1/3 of the total, we can write:
where C1 is the capacitance of the part non-filled with dielectric, and C2 is the capacitance of the part filled with dielectric. The total capacitance of the system in parallel is
Substituting,
This is equivalent to a capacitor completely filled with a dielectric with dielectric constant k=1.97. Therefore, using again eq.(3), we find the new voltage:
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Final answer:
The pressure of oxygen coming out of the O₂ flush valve (bypass) is typically around 50-60 PSI.
Explanation:
The pressure of oxygen coming straight out of the O₂ flush valve (bypass) can vary depending on the specific system, but it is typically in the range of 50-60 PSI (pounds per square inch).
Learn more about oxygen pressure here:
#SPJ11
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14/6=2 1/3 m/s
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So there's only one universe, we're in it, and the one that
we're in is the closest one.
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equal to the static frictional force.
F = (mass) x (gravity) x (coefficient of static friction).
Once it's moving, the force required to keep it moving at a steady speed,
without speeding up or slowing down, is the force of kinetic friction.
F = (mass) x (gravity) x (coefficient of kinetic friction).
In both equations, [ (mass) x (gravity)] is just the object's 'weight'.