Physics, 25.10.2019 23:43, emblemhacks
Atransformer changes 120 v across the primary to 1200 v across the secondary. if the secondary coil has 800 turns, how many turns does the primary coil have?
(a) 40
(b) 80
(c) 100
(d) 400
(e) 4000
Answers: 2
Physics, 22.06.2019 10:00, myanniespencer39
Which accurately compares concave and convex lenses?
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Physics, 22.06.2019 12:00, jazz8224
The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?
Answers: 3
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