Physics, 15.01.2021 01:50 izzyisawesome5232
In a flame test, atomic-level changes in electron energy create macroscopic-level changes in visible light energy. Which statement about flame tests is true?(1 point)
Visible blue light corresponds to relatively small changes in the energy levels of the electrons.
Because the energy levels of the electrons in different metals are usually the same, different metals usually emit the same colors of visible light.
Because the energy levels of the electrons in different metals are usually not the same, different metals usually emit different colors of visible light.
Visible red light corresponds to relatively large changes in the energy levels of the electrons.
Answers: 2
Physics, 21.06.2019 19:30, davidsteck99
A33.1 g copper object is launched from a 1.5 m 30° steel incline positioned on the floor by being pulled up a string attached to a 50.0 g mass suspended vertically over a pulley. the object is projected towards a glass table where it lands when it is at the point along its trajectory with the lowest speed. it comes to a halt when it clears the opposite edge of the table. it then falls and lands on 9 physics texts each 5 cm thick that are stacked on the floor on the opposite side of the table. assume that the table does not have a ledge and the rectangular object experiences 0.05 n of air resistance as it falls towards the books. how far and how long did the object travel and how fast does it hit the books. assume that at the moment the copper object leaves the incline, the massless string and ideal pulley break off
Answers: 2
Physics, 22.06.2019 04:20, livigrace9004
Calculate the capacitance of a system that stores 2.0 x 10^-10c of charge at 100.0 v. use c=q/v. a. 2.0 x 10^-12 f b. 2.0 x 10^-8 f c. 5.0 x 10^11 f d. 5.0 x 10^7 f
Answers: 1
In a flame test, atomic-level changes in electron energy create macroscopic-level changes in visible...
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