Physics, 11.10.2020 23:01, mariah10455
The rate at which heat enters an air conditioned building is often roughly proportional to the difference in temperature between inside and outside.
(a) Under this assumption, show that the cost of operating an air con- ditioner is proportional to the square of the temperature difference.
(b) Give a numerical example for a typical house and discuss implications for your electric bill.
(c) Suppose instead that heat enters the building at a rate proportional to the square-root of the temperature difference between inside and outside. How would the operating cost now depend on the temperature difference?
Answers: 1
Physics, 21.06.2019 16:00, george27212
The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.
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Physics, 22.06.2019 01:20, destinybowers18
Acar moves a distance of 50.0 km west, followed by a distance of 64.9 km north what was the magnitude of the displacement of the car, in units of kilometers?
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Physics, 22.06.2019 11:50, brendaesme
Question 1 (5 pts): what is the maximum distance for which you can you resolve the two individual headlights of an on-coming truck as two separate lights rather than one if the headlights are separated by 2.00 m and your eye has a diameter of 1.00 centimeter? assume a wavelength of 500 nm.
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The rate at which heat enters an air conditioned building is often roughly proportional to the diffe...
Mathematics, 19.07.2020 21:01
Mathematics, 19.07.2020 21:01
Mathematics, 19.07.2020 21:01
Mathematics, 19.07.2020 21:01
Mathematics, 19.07.2020 21:01
Mathematics, 19.07.2020 21:01