Answer:
Q=127.66W
L=9.2mm
Explanation:
Heat transfer consists of the propagation of energy in the form of heat in different ways, these can be convection if it is through a fluid, radiation through electromagnetic waves and conduction through solid solids.
To solve any problem related to heat transfer, the general equation is used
Q = delta / R
Where
Q = heat
Delta = the temperature difference
R = is the thermal resistance by conduction, convection and radiation
to solve this problem we propose the previous equation
Q = delta / R
later we find R
Q=(25-(-5))/0.235=127.66W
part b
we use the same ecuation with Q=127.66
Q = delta / R
Δ
Answer:
# string_contains function is defined with input_string
# as arguments
def string_contains(input_string):
# if-statement that check if letter z is in input_string
if 'z' in input_string:
# it print"has the letter z" if it has z
print("has the letter z")
else:
# else it print "not worthwhile"
print("not worthwhile")
# string_contains function is called
string_contains("The animal is zebra")
string_contains("learning is fun")
Explanation:
The code is written in Python and well commented.
Image of the output when the function is called is attached.
Answer:
w ( mass flow rate of air ) = 3.16 kg/s
Explanation:
<u>Determine the mass flow rate of air </u>
mass flow rate of water = 1.5 kg/s
Height at which air enters the cooling tower = 1m
velocity of air entering at 1 m = 20 m/s
Height at which air leaves the cooling tower = 7 m
attached below is a detailed solution of the problem
Code:
#include <iostream>
using namespace std;
int main()
{
int Car_Year;
cout<<"Please Enter the Car Model."<<endl;
cin>>Car_Year;
if (Car_Year<1967)
{
cout<<"Few safety features."<<endl;
}
else if (Car_Year>1971 && Car_Year<=1991)
{
cout<<"Probably has head rests."<<endl;
}
else if (Car_Year>1991 && Car_Year<=2000)
{
cout<<"Probably has antilock brakes."<<endl;
}
else if (Car_Year>2000)
{
cout<<"Probably has airbags."<<endl;
}
else
{
cout<<"Invalid Selection."<<endl;
}
return 0;
}
Output:
Please Enter the Car Model.
1975
Probably has head rests.
Please Enter the Car Model.
1999
Probably has antilock brakes.
Please Enter the Car Model.
2005
Probably has airbags.
Please Enter the Car Model.
1955
Few safety features.
Explanation:
We were required to implement multiple If else conditions to assign car model year with the corresponding features of the car.
The code is tested with a wide range of inputs and it returned the same results as it was asked in the question.
Answer:
b
Explanation:
what is anythin efficiency if ta