Discussion: 1. Prepare a graph of %volume condensed vs.
temperature. 2. Explain the characteristic properties of matter
that the process of distillation relies upon. Why and how does this
process work? 3. In distillation test, what is the purpose of the
condenser? 4. Compare crude oil fractions with higher boiling
points to those with lower boiling points and answer these
questions:
The
viscosity of SAE 10 motor oil at room temperature is about
0.25Pa-s. Consider a 5cm- thick oil layer between two
5m2
surfaces.
a)
Calculate the force on the bottom layer if the top later is moving
at a constant speed of
3.5m/s.
b)
If the force were to remain constant, how long will it take until
the two layers are moving at the same
speed?
c)
Of course the problem is not that simple, explain what happen with
the...
What is acceleration, and what are its properties? What is the
relationship of acceleration to a change in velocity and the time
it takes for the velocity to change?
Tin (Sn) metal is a superconductor with a transition temperature
of 3.7 K. Its properties are well described by the BCS theory.
a. What is the zero temperature energy gap (in eV, not J) of
Sn?
b. The energy gap is the minimum energy required to break apart
the Cooper pairs in a superconductor. If the breaking is done by
photons what is the longest wavelength photons that can break the
pairs? What is the frequency of those photons? 1...
Explain in detail how battery size, chemical properties, age,
and temperature as well as any other factors that you may think of,
cause internal resistance with in a battery
Draw a position-vs-time, velocity-vs-time, and
acceleration-vs-time graph for each of the following objects:
1. A car traveling in a straight line at a constant speed.
2. A ball rolling down a hill, getting faster as time goes
by.
3. A rock that is tossed straight up in the air before coming
back down to its starting point.