Answers: 1
Physics, 21.06.2019 22:30, elijahdecent6070
Under conditions for which the same room temperature is maintained by a heating or cooling system, it is not uncommon for a person to feel chilled in the winter but comfortable in the summer. provide a plausible explanation for this situation (with supporting calculations) by considering a room whose air temperature is maintained at 20รขยฐc throughout the year, while the walls of the room are nominally at 27รขยฐc and 14รขยฐc in the summer and winter, respectively. the exposed surface of a person in the room may be assumed to be at a temperature of 32รขยฐc throughout the year and to have an emissivity of 0.90. the coefficient associated with heat transfer by natural convection between the person and the room air is approximately 2 w/m2 รขโนโฆรขโนโฆ k. what is the ratio of the thermal resistance due to convection to the thermal resistance due to radiation in the summer? what is the ratio of thermal resistances in the winter
Answers: 1
Physics, 22.06.2019 07:00, hdjsjfjruejchhehd
If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?
Answers: 2
Physics, 22.06.2019 07:30, michaireid04
Identify the theory that can be used to explain each phenomenon. answers diffraction: wave theory interference: wave theory reflection: both particle and wave theories refraction: both particle and wave theories
Answers: 3
Would thermal energy be greater at 0 c or 48 f...
Mathematics, 01.02.2021 21:00
Mathematics, 01.02.2021 21:00