A hexagonal close-packed cell is known to contain two atoms of
the same type located at...
A hexagonal close-packed cell is known to contain two atoms of
the same type located at the positions of (0,0,0,) and
(1⁄3,2⁄3,1⁄2). Compute the structure factor Fhkl.
In a hexagonal close-packed (HCP) material, let a represent the
interatomic spacing within a close-packed layer (plane), and let c
represent the lattice parameter normal (perpendicular) to these
layers. There are two close-packed layers stacked along c in the
conventional unit cell, as described in Lecture 3. (i) Find an
expression for a in terms of the atomic radius R. (ii) Now imagine
the same close-packed layers, made from the same atoms as before
(i.e. R does not change), but...
Two vessels contain the same number N of molecules of the same
perfect gas. Initially the two vessels are isolated from each
other, the gases being at the same temperature T but at different
pressures P1 and P2. The partition separating the two gases is
removed. Find the change of entropy of the system when equilibrium
has been re-established, in terms of initial pressures P1 and P2.
Show that this entropy change is non-negative.
Are sperm produced via the same type of cell division as the egg
or different? Is this called mitosis or meiosis?
Is growth present or is absent during early cleavage?
How can you tell the difference between a fertilized an
unfertilized egg?
Need help on these questions thanks!
What is the process of red blood cell production is
known as?
Which type of leukocyte may produce
antibodies?
Where do T lymphocytes mature?
What is the stoppage of bleeding is known
as?
What vitamin is necessary for the proper production of
functional clotting factors in the liver?
When is fibrin produced during the coagulation
cascade?
The ABO blood group is based on which
antigen(s)?
Which of the following blood types is incompatible for
donation to B+?
Predict the position...
Part A
Which of the following student-drawn cell models contain two chromosomes?
Select all that apply.
Part B
Identify whether each statement about this cell model is true or false.
Part C
Which of the following student-drawn chromosome models show a correct depiction of genetic information in a replicated chromosome?
Select all that apply.
Two ramps, each with the same shape angle, and height from the
base contain two different objects. One ramp has a solid sphere
located at the top while the other ramp has a solid cube located at
the top. The mass of the sphere is equal to the mass of the cube.
The objects are released from the same height. The sphere rolls
without slipping, and the cube travels without friction. After
leaving the ramp, which object will travel higher?...
2. Suppose that a box is known to contain 50 red and 25 blue
marbles. Two marbles are to be drawn in succession. The first
marble is set aside and its color noted. It is not placed back into
the box before the second marble is drawn.
a. Sketch a probability tree which represents this
situation.
b. What is the probability that the second marble is red, if the
first marble is red?
c. If the second marble is blue,...
A subject is presented with three cups, two of which contain the
same brand of cola and one of which contains a different brand. The
subject is to identify which one of the three cups contains a
different brand of cola than the other two. We wish to determine if
the subject will perform better than randomly guessing over 75
trials. (Use 4 decimal places for all calculations)
a) H_0 is pi =
H_a is pi >
b) n*pi = and...
In Python write a loop that tests whether two lists contain the
same integers in the same order:
listA = [1, 2, 3, 4]
listB = [1, 2, 3, 4]
equal = True
for ______ in ______:
if _______ != ________
:
_______
= ________
if equal:
print(_______)
else:
print(_______)