Physics, 13.06.2020 23:57, stefaniethibodeaux
You place a light bulb 8 cm in front of a concave mirror. You then move a sheet of paper back and forth in front of the mirror. The image of the light bulb focuses on the paper when the paper is 12 cm in front of the mirror. What is the focal length of the mirror?
Answers: 1
Physics, 22.06.2019 04:00, alexialoredo625
When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative
Answers: 2
Physics, 22.06.2019 10:00, jeffffffff
**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z
Answers: 1
Physics, 22.06.2019 14:30, samone26
Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates
Answers: 3
Physics, 22.06.2019 17:30, herbal420medici
Ethanol has a heat of vaporization of 38.56 kj/mol and a normal boiling point of 78.4 c. what is the vapor pressure of ethanol at 14 c?
Answers: 3
You place a light bulb 8 cm in front of a concave mirror. You then move a sheet of paper back and fo...
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