Why is collaboration so important in the building of scientific knowledge?
a. collaboration...
Physics, 13.10.2019 21:30 cassidy100117
Why is collaboration so important in the building of scientific knowledge?
a. collaboration prevents plagiarism.
b. collaboration allows more people to take the blame if something goes wrong.
c. collaboration allows private companies to make more profit from their employees' works.
d. collaboration allows for the sharing of knowledge to better develop plans and experiments.?
Answers: 1
Physics, 22.06.2019 03:00
An internally reversible refrigerator has a modified coefficient of performance accounting for realistic heat transfer processes of where qin is the refrigerator cooling rate, qout is the heat rejection rate, and is the power input. show that copm can be expressed in terms of the reservoir temperatures tc and th, the cold and hot thermal resistances rt,c and rt,h, and qin, as where rtot rt,c rt,h. also, show that the power input may be expressed as 1.39 a household refrigerator operates with cold- and hot-temperature reservoirs of tc 5 c and th 25 c, respectively. when new, the cold and hot side resistances are rc,n 0.05 k/w and rh,n 0.04 k/w, respectively. over time, dust accumulates on the refrigeratorââŹâ˘s condenser coil, which is located behind the refrigerator, increasing the hot side resistance to rh,d 0.1 k/w. it is desired to have a refrigerator cooling rate of qin 750 w. using the results of problem 1.38, determine the modified coefficient of performance and the required power input w under (a) clean and (b) dusty coil conditions. internally reversible refrigerator qout qin w high-temperature reservoir low-temperature reservoir th th,i tc,i tc high-temperature side resistance low-temperature side resistance w qin th tc qinrtot tc qinrtot copm tc qinrtot th tc
Answers: 2
Physics, 22.06.2019 07:40
Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents
Answers: 2
Physics, 23.06.2019 02:50
Orque can be calculated by multiplying the force (n) applied at 90â to the lever arm at a distance (m) from the pivot point (point of rotation), the compound si unit for the torque is nâ
m. if the force (at 90â to the lever arm) applied is 15 n and it is applied at 2.0 m from the pivot point (point of rotation), what is the torque on the lever?
Answers: 2
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