Answer:
In Btu:
Q=0.001390 Btu.
In Joule:
Q=1.467 J
Part B:
Temperature at midpoint=274.866 C
Explanation:
Thermal Conductivity=k=30 (Btu/hr)/(ft ⋅ °F)= 
Thermal Conductivity is SI units:

Length=20 cm=0.2 m= (20*0.0328) ft=0.656 ft
Radius=4/2=2 mm =0.002 m=(0.002*3.28)ft=0.00656 ft
T_1=500 C=932 F
T_2=50 C= 122 F
Part A:
In Joules (J)

Heat Q is:

In Btu:

Heat Q is:

PArt B:
At midpoint Length=L/2=0.1 m

On rearranging:


Answer:
Who would pay for my product or service?
Who has already bought from me?
Am I overestimating my reach?.
What does my network think?.
Am I making assumptions based on my personal knowledge and experience?
What's my revenue model
How will I sell my product or service?
How did my competitors get started?
How will I find my customers?
Is there room to expand my target market?
Well you could always do what Hispanics do and repeat the question 2-3 times while yelling till they finally answer
Answer: B,D,E, and G or 2,4,5,7
Explanation: Hope this helps Trust the answer I took the test!