Physics, 31.01.2020 12:44, sabitams1194
Rays of light incident on a lens and parallel to the principal axis of the lens converge
a. at the focal point of the lens.
b. in front of the lens.
c. in back of the lens.
d. at the center of curvature of the lens.
Answers: 3
Physics, 22.06.2019 06:30, nathangirnet
What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34
Answers: 3
Physics, 22.06.2019 12:50, starr3971
Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.
Answers: 2
Physics, 22.06.2019 15:00, chynahgibsonwinfrey
What happens when a rubber rod is rubbed with a piece of fur?
Answers: 1
Rays of light incident on a lens and parallel to the principal axis of the lens converge
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