what is the three forms of heat transfer?
(explain with each type with equations)
give equation...
what is the three forms of heat transfer?
(explain with each type with equations)
give equation for net rate of heat transfer by radiation &
explain terms used.
Heat Transfer Mechanisms
What are the four mechanisms of
heat/energy transfer? Give an example for each. What happens to
energy when water evaporates – gained or lost? What happens to
energy when water condenses –gained or lost? Explain how
thermohaline circulation of ocean water affects global temperature
distribution. Must be 350 words long.
give a good explanation and examples
of each. this is physical geography. they have to be long
explanation.
There are three heat transfer mechanisms. Define each type and
briefly explain how they work. Additionally define insulation and
how it contrasts against these transfer mechanisms
Develop and explain each step the
general equation of heat transfer by conduction in
a constructive way starting from an element general differential in
the cartesian coordinate system and then reduce to get:
1) Laplace's equation (in R3)
Δ? = 0
2) The Poisson equation (with constant thermal conductivity
?)
Δ? + ? '''= 0
Δ is the Laplacian operator and ? ''' is a source term.
Note: start the analysis from a differential element with volume
??????. Make a...
1.Write a brief definition of the three different modes of
heat transfer. Give example for each one of the modes.
2. What is entropy? How is the entropy of the universe changed
when heat is released from a hotter object to a colder one?
heat transfer question, show equations, assumptions,
calculations and steps clearly. will give thumbs up rating if
solved correctly in 30 minutes
part a:
One of your hands is in still air at room temperature while the
other one is in still water also at room temperature. Which hand
will feel colder and why?
part b:
Why does sunscreen lotion prevent you from getting sunburn, but
not from feeling the heat from the sun?
heat transfer question, show equations, assumptions,
calculations and steps clearly. will give thumbs up rating if
solved correctly in 30 minutes
Define thermal diffusivity (α) and give its mathematical
expression.
What are the three types of heat transfer and what are some
examples and application of each type? Which type do you encounter
the most in your everyday life?