Answer:
b. 2.3 kPa.
Explanation:
This situation can be modelled by Bernoulli's Principle, as there are no energy interaction throughout the multisection pipe and current lines exists between both ends. Likewise, this system have no significant change in gravitational potential energy since it is placed horizontally on the ground and is described by the following model:
Where:
, 
- Pressures at the beginning and at the end of the current line, measured in kilopascals.
- Water density, measured in kilograms per cubic meter.
, 
- Fluid velocity at the beginning and at the end of the current line, measured in meters per second.
Now, the pressure difference between these two points is:
If 
, 
and 
, then:
(1 kPa is equivalent to 1000 Pa)
Hence, the right answer is B.
Answer:
The voltage source required to provide 1.6 A of current through the 75 ohm resistance is 120 V.
Explanation:
Given;
Resistance, R₁ = 50Ω
Resistance, R₂ = 75Ω
Total resistance, R = (R₁R₂)/(R₁ + R₂)
Total resistance, R = (50 x 75)/(125)
Total resistance, R = 30 Ω
According to ohms law, sum of current in a parallel circuit is given as
I = I₁ + I₂
Voltage across each resistor is the same
V = 1.6 x R₂
V = 1.6 x 75
V = 120 V
Therefore, the voltage source required to provide 1.6 A of current through the 75 ohm resistance is 120 V.
This voltage is also the same for 50 ohms resistance but the current will be 2.4 A.
Answer:
Two Python codes are explained for the problem. Modify as appropriate
Explanation:
<u>CODE 1:</u>
def string_contains(input_string): # called function
if(input_string.__contains__('z')): # Check input_string contains 'z'
print('has the letter z.') # print input_string contains 'z'
else:
print('not worthwhile.') # print if input_string not contains 'z'
input_string = input('Please enter the string: ') # ACeept string from user
string_contains(input_string) # calling function where we pass input_string as actual parameter
<u>CODE 2:</u>
def string_contains(input_string):
for x in input_string:
if x=='z':
return 'has the letter z'
return 'not worthwhile'
Answer:
Explained
Explanation:
Alice need to know the secret key of carol to verify the carol's answer to Alice challenges.
Similarly it needs the secret key of Bob to verify bob's answer to Alice challenge (actually any of the three need others secret key for verify answer to challenge).
So, Bob could impersonate Carol to Alice as he should know the secret key of Carol to answer Carol's challenge. Hence it is no more secure than having all use the same secret key.
So, it is no more secure than having them all use the same secret key K.
The difference between the engineering design process and the reverse engineering process are there, but very subtle. The engineering design process is a process based on careful planning and months of designing to create a blueprint for a certain project. The reverse engineering process is the base of learning to create something by working backwards on a previously made inspiration for your project. Three differences are that that the engineering design process doesn't require any physical learning and is more based on mental and written learning (unlike the reverse engineering process). Another difference includes that in the reverse engineering process you don't need to take anything apart and learn how things work based on the on hands aspect of this variety of engineering. The final difference is that the engineering design project is made fresh from your own thoughts and not based off of a similar project.
