Question

Correlation between sphere diameter and nusselt number

Answer #1

Nusselt number are given as

where *h* is the convective heat transfer coefficient of
the flow, *L* is the characteristic length, *k* is
the thermal conductivity of the fluid.

The general formula for the characteristic length is the volume of a system divided by its surface.

A typical use-case is calculating flow through circular tube in order to examine flow conditions (i.e. the Reynolds number). In those cases, the characteristic length is the diameter of the pipe. so in your case L will be equal to diameter of pipe.

Calculate the number of atoms in a 3 inch diameter sphere of
iridium.

The correlation between x, ( the diameter of the tree), and Y
(the tree’s height) is 0.875064. A coefficient of
correlation of 0.875064 indicates a strong correlation between the
independent variable and the dependent variable. In
general, if Y tends to increase along with X, there's a positive
relationship.
QUESTION: What does this mean in terms
of the problem?
Is it a strong correlation?
is it statistically significant?

For scattering from a hard sphere with radius R:
a) Find the correlation between the scattering angle and impact
parameter b.
b) Obtain the differential cross-sectional area for this
collision.
c) When a bundle of N particles per unit surface passes through
such a hard sphere, how many particles per unit time are scattered
between 60 and 180 degrees.
d) Calculate the total cross-sectional area. Discuss whether the
result you found is meaningful.

For scattering from a hard sphere with radius R:
a) Find the correlation between the scattering angle and impact
parameter b.
b) Obtain the differential cross-sectional area for this
collision.
c) When a bundle of N particles per unit surface passes through
such a hard sphere, how many particles per unit time are scattered
between 60 and 180 degrees.
d) Calculate the total cross-sectional area. Discuss whether the
result you found is meaningful.

36. A researcher wants to examine if there is a correlation
between number of work hours per week and academic performance in a
sample of n = 150 undergraduate students. What will be the null
hypothesis, if she plans to use a two-tailed Person’s
correlation test in data analysis?
A. There is a significant correlation between number of work
hours per week and academic performance in the population of
undergraduate students.
B. There is a significant positive correlation between number...

Two 2.0-cm-diameter insulating spheres have a 6.10 cm space
between them. One sphere is charged to + 22.0 nC , the other to -
37.0 nC . What is the electric field strength at the midpoint
between the two spheres?

is there a correlation between the level of cognitive dissonance
a consumer experiences and the number of choices in the market for
the product purchased?

A sphere has the surface area of 81π. What is its diameter?

The correlation between the number of seeds or pellets that
Parsnip eats and the amount of time that it takes Parsnip to eat
his food is calculated to be -0.15. Use this value to verbally
describe the relationship between the two variables.

The correlation between the number of seeds or pellets that
Parsnip eats and the amount of time that it takes Parsnip to eat
his food is calculated to be -0.15. Use this value to verbally
describe the relationship between the two variables?

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