Answer:
False
Explanation:
According to the American National Standard for Engineering Drawings, there are ten (10) different types of lines used in engineering drawings to communicate important information about the item. Some of these lines could either be thick or thin. These include the following:
1. Visible Line
2. Hidden Line
3. Section Line
4. Center Line And Symmetry Line
5. Dimension Line Extension Line And Leader
6. Cutting-Plane Line Or Viewing-Plane Line
7. Break Line
8. Phantom Line
9. Stitch Line
10. Chain Line
Answer:
15.24°C
Explanation:
The quality of any heat pump pumping heat from cold to hot place is determined by its coefficient of performance (COP) defined as
Where Q_{in} is heat delivered into the hot place, in this case, the house, and W is the work used to pump heat
You can think of this quantity as similar to heat engine's efficiency
In our case, the COP of our heater is
Where T_{house} = 24°C and T_{out} is temperature outside
To achieve maximum heating, we will have to use the most efficient heat pump, and, according to the second law of thermodynamics, nothing is more efficient that Carnot Heat Pump
Which has COP of:
So we equate the COP of our heater with COP of Carnot heater
Rearrange the equation
Solve this simple quadratic equation, and you should get that the lowest outdoor temperature that could still allow heat to be pumped into your house would be
15.24°C
Answer:
Sediment gravity flows are mixtures of water and sediment particles where the gravity acting on the sediment particles moves the fluid, in contrast to rivers, where the fluid moves the particles.
Explanation: