Physics, 22.04.2020 00:41 roserose3098
The kitchen in your house measures 16 ft by 16 ft. You need to have 50 footcandles of illumination in the room. How many 100 watt bulbs will be required if one bulb emits 1740 lumens. (1 footcandle = 1 lumen/sq. ft). If this bulb is replaced by 23-Watt CFL bulbs to get same illumination, what would be energy cost savings in a year if the bulb operated for for 800 hours in a year with CFL bulbs? The electricity cost is 0.13/kWh in that region. a. $64.06 b. $8.01 c. $58.45 d. $75.92
Answers: 1
Physics, 21.06.2019 15:30
Taylor's experiment: 1. accurately measured the speed of light 2. locked together the phases of two light sources so that the interference pattern would not shift 3. showed that man's reaction time was much slower than the speed of light 4. showed that individual photons have wave characteristics
Answers: 2
Physics, 21.06.2019 20:00
Afixed electric space heater wired by a cable with an ampacity of 30 a should draw a maximum current of a. 30 a. b. 24 a. c. 15 a. d. 27 a.
Answers: 2
Physics, 22.06.2019 17:30
Aball thrown by ginger is moving upward through the air. diagram a shows a box with a downward arrow. diagram b shows a box with an upward arrow. diagram c shows a box with a downward and upward arrow equal in size. diagram d shows a box with a downward and upward arrow with the downward arrow larger in size. which force diagram represents the forces on the ball? you may neglect the effects of air resistance.
Answers: 3
Physics, 22.06.2019 20:00
Awave has a wavelength of 7 mm and a frequency of 19 hertz. what is its speed?
Answers: 1
The kitchen in your house measures 16 ft by 16 ft. You need to have 50 footcandles of illumination i...
History, 07.07.2019 20:30
Mathematics, 07.07.2019 20:30
Mathematics, 07.07.2019 20:30
English, 07.07.2019 20:30
Biology, 07.07.2019 20:30
Spanish, 07.07.2019 20:30
History, 07.07.2019 20:30
Mathematics, 07.07.2019 20:30
History, 07.07.2019 20:30
Mathematics, 07.07.2019 20:30
History, 07.07.2019 20:30
History, 07.07.2019 20:30