So what happens is the host will not kill the y no se que hacer para no one can see it in
Answer:
30.128 days
Explanation:
Given that:
Mean = 25
Standard deviation = 4
Confidence interval = 90% = 0.9
Since the confidence interval should not exceed 90%
Then using z test table
P(z) = 0.9
For 0.8997 , we get = 1.28
For 0.9015, we get = 1.29
∴
By solving
Z = 1.282
Thus, the duration to be used so that it will not exceed 90% C.I is:
Z = (x - μ)/σ
1.282= ( x - 25)/4
1.282 * 4 = x - 25
(1.282*4)+25 = x
x = 30.128 days
Answer:
a)148.9hp
b)25.2kg
Explanation:
Hello!
To solve this exercise follow the steps below.
1. Find the power the generator needs to operate at 100Kw,
This is done by remembering that efficiency in a generator is the ratio between real power and ideal power.
where
α=generator efficiency =0.9
Wi=nominial or ideal efficiency=100Kw
Wr=real effiency
solving for Wr
the power that the combustion engine must deliver is 111Kw for the generator to deliver 100Kw, Now use conversion factor to know the value in horsepower
2. Find the engine supply power using the combustion engine efficiency definition
α=engine efficiency =0.35
Wo = output power
=111.11Kw
Wi = supply power
solving for Wi
3. use the calorific power of diessel (CP=45KJ /g) to find the mass flow, remember that the supply power is the product of the mass flow and the caloric power
Wi=m(CP)
m=mass flow
solving for m
4. The mass flow is the ratio between the mass consumed and the time (1h) in this way we can find the diessel consumed in one hour at full load
M=diessel mass consumed
m=M/t
M=mt
Answer:
Explanation:
Given data:
Sa = 2.1
change in specific resistance is given as
........2
where v is elastic range = 0.30
Answer:
Insert
'try:' at line 1
'except:' at line 3
Explanation:
The "try and except" commands in Python are used for exception handling.
try: the statements under this block are executed normally
except: the the statements under this block are executed when there is an exception.
We can use these commands to handle errors, for example, in the given scenario we don't want the user to enter a floating point number such as
1.5, 2.6 etc.
When the user enters an integer number then the except command is not executed.
When the user enters a floating point number then the except command is executed, program is stopped and error message is shown that is at line 4
Python code:
# line 1
try:
# line 2
age = int(input("Enter your age: "))
# line 3
except:
# line 4
print("Invalid input")
Output:
Test 1:
Enter your age: 20
Test 2:
Enter your age: 20.5
Invalid input