Exercise 6.8: Make a nested dictionary from a file The viscosity u of gases depends on the temperature. For some gases the following formula is relevant: To -C (T\15 To - C µ(T) = HoT+C (T, where the values of the constants C, To, and Ho are found in the file src/ dictstring/viscosity_of_gases.dat". The temperature is measured in Kelvin. a) Load the file into a nested dictionary mu_data such that we can look up C, To. and lo for a gas with name name by mu_data[name] [X], where X is 'C' for C, 'T_0' for To, and 'mu_0' for µo- b) Make a function mu (T, gas, mu_data) for computing p(T) for a gas with name gas (according to the file) and information about constants C, To, and µo in mu_data. c) Plot u(T) for air, carbon dioxide, and hydrogen with T e [223, 373].
Exercise 6.8: Make a nested dictionary from a file The viscosity u of gases depends on the temperature. For some gases the following formula is relevant: To -C (T\15 To - C µ(T) = HoT+C (T, where the values of the constants C, To, and Ho are found in the file src/ dictstring/viscosity_of_gases.dat". The temperature is measured in Kelvin. a) Load the file into a nested dictionary mu_data such that we can look up C, To. and lo for a gas with name name by mu_data[name] [X], where X is 'C' for C, 'T_0' for To, and 'mu_0' for µo- b) Make a function mu (T, gas, mu_data) for computing p(T) for a gas with name gas (according to the file) and information about constants C, To, and µo in mu_data. c) Plot u(T) for air, carbon dioxide, and hydrogen with T e [223, 373].
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The file needed is the second screenshot posted.
Transcribed Image Text:1
# Viscosity data of some gases
# Sutherland's formula for the viscosity:
mu = mu_0* (T_0 + C)/(T +
C) (T/T_0)**1.5
#
4
# Column 1: gas name
# Column 2: C (in Kelvin) (Sutherland's constant)
# Column 3: T_0 (in Kelvin)
7
# Column 4: mu_0 (in 10**-6 Pa*s)
#3
gas
T_0
mu_0
10
air
120
291.15
18.27
11
nitrogen
111
300.55
17.81
12
охуgen
127
292.25
20.18
13
carbon dioxide
240
293.15
14.8
14
carbon monoxide 118
288.15
17.2
15
hydrogen
72
293.85
8.76
16
ammonia
370
293.15
9.82
17
sulphur dioxide 416
293.65
12.54
18
19
# Source: http://en.wikipedia.org/wiki/Viscosity
ON Co
![Exercise 6.8: Make a nested dictionary from a file
The viscosity u of gases depends on the temperature. For some gases the following
formula is relevant:
To -C (T
μ(T) = HoT + C\To,
1.5
where the values of the constants C, To, and Ho are found in the file src/
dictstring/viscosity_of_gases.dat". The temperature is measured in
Kelvin.
a) Load the file into a nested dictionary mu_data such that we can look up C, To.
and µo for a gas with name name by mu_data[name] [X], where X is 'C' for
C, 'T_0' for To, and 'mu_0'for 4o.
b) Make a function mu(T, gas, mu_data) for computing µ(T) for a gas with
name gas (according to the file) and information about constants C, To, and lo
in mu_data.
c) Plot u(T) for air, carbon dioxide, and hydrogen with T E [223, 373].](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F083bf2fa-560f-4112-a271-9f7ac07ce03b%2Faf3ae122-0070-4191-a613-6977521f9cff%2Fc2ksewrg_processed.png&w=3840&q=75)
Transcribed Image Text:Exercise 6.8: Make a nested dictionary from a file
The viscosity u of gases depends on the temperature. For some gases the following
formula is relevant:
To -C (T
μ(T) = HoT + C\To,
1.5
where the values of the constants C, To, and Ho are found in the file src/
dictstring/viscosity_of_gases.dat". The temperature is measured in
Kelvin.
a) Load the file into a nested dictionary mu_data such that we can look up C, To.
and µo for a gas with name name by mu_data[name] [X], where X is 'C' for
C, 'T_0' for To, and 'mu_0'for 4o.
b) Make a function mu(T, gas, mu_data) for computing µ(T) for a gas with
name gas (according to the file) and information about constants C, To, and lo
in mu_data.
c) Plot u(T) for air, carbon dioxide, and hydrogen with T E [223, 373].
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