Answer:
The weight is 4.492 lb
The density is
Solution:
As per the question:
Volume of spacecraft component,
Mass of the component of spacecraft,
Acceleration of gravity at a point on Earth,
Acceleration of gravity on Moon,
Now,
The weight of the component,
Now,
Average density,
Answer:
The five stages of Design Thinking, according to d.school, are as follows: Empathise, Define , Ideate, Prototype, and Test. Let's take a closer look at the five different stages of Design Thinking
Explanation:
Solution :
Using the data table for refrigerant-134a at P = 120 psia
∴
For pressure, P = 20 psia
Change in temperature,
Now we find the quality,
The final energy,
Change in internal energy
= 38.09297-40.5485
= -2.4556
Solution :
Characteristic length = thickness / 2
= 0.02 m
Thermal conductivity for steel is 42.5 W/m.K
= 0.014
Since the Biot number is less than 0.01, the lumped system analysis is applicable.
Where,
T = temperature after t time
= surrounding temperature
= initial temperature
t = time
We calculate B:
= 0.000416
Thus,
t = 5281.78 second
= 88.02 minutes
Thus the time taken for reaching 100 degree Celsius is 88.02 minutes.