Question
In: Physics
1. Mourning doves have a small patch of iridescent feathers. The color is produced by a...
1. Mourning doves have a small patch of iridescent feathers. The color is produced by a 330-nm-thick layer of keratin (n = 1.56) with air on both sides that is found around the edge of the feather barbules.
Part A) For what wavelength or wavelengths in the visible spectrum would this structure produce constructive interference?
2. One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. Having recently studied optics in your physics class, you're not too surprised to see that the patch of light seems to be a circular diffraction pattern. It appears that the central maximum is about 3 cmacross, and you estimate that the distance from the window shade to the wall is about 5 m .
Part A)
Knowing that the average wavelength of sunlight is about 500 nm, estimate the diameter of the pinhole.
Solutions
genius_generous answered 2 years agoRelated Solutions
In parrots, the gene F encodes feather color where FF parrots have yellow feathers, Ff parrots...
In parrots, the gene F encodes feather color where FF parrots
have yellow feathers, Ff parrots have green feathers and ff parrots
have blue feathers. They also have a gene, B, for beak size that is
located 16 map units away from the F gene. BB and Bb encode for
longs beaks and bb encodes for short beaks. When FB/fb parrots are
crossed to Fb/fB parrots and there are 750 offspring, how many
would have short beaks and green feathers?...
In a breeding experiment, chicken with white feathers, small comb were mated and the 192 offspring...
In a breeding
experiment, chicken with white feathers, small comb were mated and
the 192
offspring
belonged
to four
categories are
(i)
white
feathers, small comb (WS) – 100
offspring,
(ii)
white
feathers, large comb (WL) – 32
offspring,
(iii)
dark feathers,
small comb and (DS) – 40
offspring,
(iv)
dark
feathers,
large comb (DL) – 20
offspring.
Use an
appropriate test to check if the
offspring
categories
follow the expected ratio 9:3:3:1
(level of
significance = 0.05).
1. Approximately 25% of the adult population is allergic to pets with fur or feathers, but...
1. Approximately 25% of the adult population is allergic to pets
with fur or feathers, but only 4% of the adult population has a
food allergy. A quarter of those with food allergies also have pet
allergies.What is the probability a person has food allergies but
is not allergic to pets?
A. 0.01
B. 0.03
C. 0.04
D. 0.0625
E. 0.24
2. Suppose the probability there are children in a car involved
in an auto accident is 0.3. Further suppose...
In a small exchange economy, three nations have been given red and yellow color, each of...
In a small exchange economy, three nations have been given red
and yellow color, each of the three nations have recieved 25 cans
of each color. The nations Cobb-Douglas utility functions are A)
U(R,Y) = R0.1Y0.9, B)
U(R,Y)=R0.2Y0.8 and C) U(R,Y) =
R0.3Y0.7. The nations trade.
Question 1) At what price relation will there be an
equilibrium?
Question 2) How much of each color will the nation consume?
A spokesperson for the Mars Company stated that MM’s are produced in the following color proportions:...
A spokesperson for the Mars Company stated that MM’s are
produced in the following color proportions:
15% Brown, 15% Yellow, 20% Blue, 15% Red, 20% Green, and 15%
Orange. To test this claim a Math 15 class at SRJC randomly
selected 928 MM’s. The results appear below. (These are actually
the results we saw from the Handout 4 assignment last semester).
Test the claim at
MM color
Number
Expected Value
Brown
144
Yellow
140
Blue
180
Red
129
Green
209...
Yellow coat color in guinea pigs is produced by the homozygous genotype, YY, and white is...
Yellow coat color in guinea pigs is produced by the homozygous
genotype, YY, and white is produced by the homozygous genotype, yy.
One homozygous yellow guinea pig crosses with a homozygous white
guinea pig to produce cream guinea pigs. a. What pattern of
inheritance does this follow (complete, incomplete or
co-dominance)? How do you know? b. Draw a Punnett square for a
cross between two cream guinea pigs. What are the genotypic and
phenotypic ratios?
5. A spokesperson for the Mars Company stated that MM’s are produced in the following color proportions:...
5. A
spokesperson for the Mars Company stated that MM’s are produced in
the following color proportions:
15%
Brown, 15% Yellow, 20% Blue, 15% Red, 20% Green, and 15% Orange. To
test this claim a Math 15
class
at SRJC randomly selected 928 MM’s. The results appear below.
(These are actually the results
we
saw from the Handout 4 assignment last semester). Test the claim at
a = 0.5 (2,2,3,3)
MM color
Number
Expected Value
Brown
144
Yellow
140
Blue
180
Red...
A small economy produced and consumed only two goods (computers and pies) in Year 1 and...
A small economy produced and consumed only two goods (computers
and pies) in Year 1 and Year 2, in the amounts shown in the table
below.
[Read the next sentence very carefully.] Year 1 is the
base year for all calculation purposes in this question, and we
also assume that the official market basket for the CPI is the
actual mix of output produced in Year 1.
Computers
Pies
Quantity
Price
Quantity
Price
Year 1
30
$1000
100
$10
Year...
A small hole in the wing of a space shuttle requires a 20.7-cm2 patch. (a) What is the patch’s area in square kilometers (km2 )? (b) If the patching material costs NASA $3.25/in2 , what is the cost of the patch?
A small hole in the wing of a space shuttle requires a 20.7-cm2 patch. (a) What is the patch’s area in square kilometers (km2 )? (b) If the patching material costs NASA $3.25/in2 , what is the cost of the patch?
1. Marine biologists have noticed that the color of the outermost growth band on a clam...
1. Marine biologists have noticed that the color of the
outermost growth band on a clam tends to be related to the time of
the year in which the clam dies. A biologist conducted a small
investigation of whether this is true for the species Protothaca
staminea. She collected a sample of 78 clam shells from the species
and classified them according to the month when the clam died and
the color of the outermost growth band. The data are...
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