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2 answers:
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Answer:
0.10 m
Explanation:
The magnetic flux through the plane is given by
where
B is the magnetic field intensity
A is the area of enclosed by the pipe
In this problem, we know
is the flux
B = 0.90 T is the magnetic field strength
Solving the equation for A, we find the area enclosed by the pipe
We know that the area is given by
where r is the radius. Solving for r, we find the radius:
And so the diameter is twice the radius:
Answer:
its surface temperature = 54.84 ° C
Explanation:
The density of aluminium = 2700 kg/m ³
Heat capacity = 897 J/Kg.K
radius of the sphere (r) = 0.081029 m
= 25 °C
= 124.978 °C
time (t) = 767.276 s
Using the formula :
where.
Replacing our values ;we have:
T ≅ 54.84 ° C
Therefore, its surface temperature = 54.84 ° C