Given Information:
Qin = 8*10 = 80 W
Win = 25 W
Temperature = T2-T1 = 10°C
Required Information:
(a) flow rate of the air = m = ?
(b) fraction of the temperature rise of air = f = ?
Answer:
(a) flow rate of the air m = 0.01044 kg/s
(b) fraction of the temperature rise of air f = 23.8 %
Solution:
(a) The flow rate of the air that fan needs to deliver can be found by
Where the value of specific heat of air is 1005 j/kg.C
m = (80 + 25)/1005*10
m = 0.01044 kg/s
(b) fraction of the temperature rise of air due to fan
ΔT = Q/mCp
ΔT = 25/0.01044*1005
ΔT = 2.38°C
So the fan causes a temperature rise of 2.38°C
f = ΔT/T2-T1
f = 2.38/10
f = 0.238 = 23.8 %
Answer:
<h3>True</h3>
Explanation:
<h3>The answer is true because...............................</h3>
Answer:
People need to solve new problems; they can do things more efficiently; buisnesses and individuals; slowing down a process.
Explanation:
Technology can be defined as a branch of knowledge which typically involves the process of applying, creating and managing practical or scientific knowledge to solve problems and improve human life. Technologies are applied to many fields in the world such as medicine, information technology, cybersecurity, engineering, environmental etc.
Advancements in technology occur because people need to solve new problems. Technology makes peoples lives more productive because they can do things more efficiently. Advancements in technology impact buisnesses and individuals.
Slowing down a process is not a reason why new technologies are introduced to a profession but rather technologies are introduced so as to catalyze the rate of production of goods and services, as well as increasing the level of output.
Generally, technology has impacted the world significantly and positively as it has helped to automate processes, increased efficiency and level of output with little or no human effort.
The answer is ".NET" (had to increase character count to let me post).