A thermometer having 1st order dynamics with a time constant of
1min is placed in a temperature bath at 50oC. After the thermometer
reaches steady state, it is suddenly placed in a bath at 60oC at t
= 0 and left there for 1 min, after which it is immediately
returned to the bath at 50 oC. a. Draw a sketch showing the
variation of the thermometer reading with time. b. Calculate the
thermometer reading at t = 0.5 min...
Star A is 3.2 times hotter than Star B. How many times brighter
is Star A than Star B?
According to the Stefan-Boltzmann Law, a larger star will appear
_________ than a smaller star of the same temperature.
brighter
bluer
redder
fainter
What is the peak wavelength of light coming from a star with a
temperature of 4,300 K?
(Submit your answer in nanometers. Remember 1nm = 10-9
m)
Sitting on the table is a red...
A vaccine for Coronavirus is likely to take a longer time than
imagined, because the most obvious target of the vaccine should be
the external spike protein on the envelope of this enveloped virus.
The cellular attachment protein on epithelial cells, which the
virus binds to for entry into the epithelial cell, is known to be
ACE2, a receptor enzyme. Explain why the production of a vaccine
targeting the coronavirus spike protein (S1), is not likely to be
successful.
The management requested that a rollercoaster ride time
shouldn’t take longer than 5 minutes on average; 10 volunteers
recorded their rollercoaster ride time (in seconds). They reported
the following set of data:
Name
Time
Z-Score
Simpson
300
Scott
290
Maurice
320
Dario
310
Vincent
390
Daniel
380
Alexander
375
Toni
290
Ivan
260
Johan
300
a. Calculate the following descriptive statistics
(Briefly explain). NOTE: you can use Excel in your
computation.
Mean
Median
Mode
Who’s time is in the lowest...
How many times have you blinked in your lifetime?
You may assume that the average person blinks 20 times per
minute.
b) How old would you be if you blinked a total of ten million
times?
Again, you may assume that the average person blinks 20 times
per
A)
For this question assume the population is at least 20 times
larger than the sample size. The null hypothesis is that the
proportions from A and B are equal.
The numbers you need to answer the questions are nA =
12 , nB = 15 ,
p' A is 0.75 and xB = 9
1) Find xA This needs to be whole
number.
2) Find p'B Round to 4 decimal places
3) Find the pooled proportion.
pc = to 4 decimal places...
Create a short Word document, no longer than a page, that
describes “How the Internet Works.” This can be from any
perspective you wish, browser, email, networking but will probably
have to cover a few of these ideas. You will receive 3 points for
each keyword and although I encourage you to use more than 5, the
maximum number of points you can receive is 15.Terms (Remember, you need to use at least 5 to
get full credit)Public IP
address ...