Answer:
Attached below
Explanation:
a) combustion gases in a cylinder during the power stroke is A closed system
b) Combustion gases in a cylinder during the exhaust stroke is an Open system
c) A balloon exhausting air is an Open system
d) It is a system
e) This is a control volume
Attached below is the sketch of the following situations
Answer:
The code is given below in python
# Code Block 1
count = 0 # count variable
total = 0 # total variable
enter = '' # input variable
while enter != 'stop':
enter = input('Enter a grade:' )
if enter != 'stop' and enter.isdigit():
total += int(enter) # add to total value
count = count + 1 # then to the count
print float(total) / count
# Code Block 2
numbers = []
while enter != 'stop':
enter = input('Enter a grade:' )
if enter != 'stop':
numbers.append(int(enter))
print sum(numbers) / float(len(numbers))
Answer:
surface temperature = 128.74⁰c
Explanation:
Given data
diameter of cable = 5 mm = 0.005 m
length of cable = 4 m
T∞ ( surrounding temperature ) = 20⁰c
voltage drop across cable ( dv )= 60 V
current across cable = 1.5 A
attached to this answer is the comprehensive analysis and solution to the problem.
The assumption made is not a good one since the calculated Ts ( surface temperature ) is very much different from the assumed Ts
Answer:
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