2. The product of an object’s mass and velocity is its
2 answers:
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Answer:
Explanation:
Given:
temperature at the hotter end,
temperature at the cooler end,
length of rod through which the heat travels,
cross-sectional area of rod,
mass of ice melted at zero degree Celsius,
time taken for the melting of ice,
thermal conductivity k=?
By Fourier's Law of conduction we have:
......................................(1)
where:
=rate of heat transfer
dT= temperature difference across the length dx
Now, we need the total heat transfer according to the condition:
we know the latent heat of fusion of ice,
Now the heat rate:
Now using eq,(1)
Answer:
y = 0.1 m
Explanation:
The electrical power for point loads is
V = k Sum qi / ri
in this case
V = k ()
indicate that V = 0
r₂ =
the distance r1 is
r₁ = y -0
the distance r2
r₂ = 0.14 -y
we substitute
0.14 - y = y
y ( ) = 0.14
y 1.4 = 0.14
y = 0.14 / 1.4
y = 0.1 m