Physics, 19.01.2021 21:30 deaishaajennings123
The laser pointer emits light because electrons in the material are excited (by a battery) from their ground state to an upper excited state. When the electrons return to the ground state, they lose the excess energy in the form of 538-nm photons. What is the energy gap between the ground state and excited state in the laser material
Answers: 2
Physics, 21.06.2019 21:10
State one advantage and one disadvantage of using a plane mirrior as a driving mirrior
Answers: 1
Physics, 22.06.2019 05:10
Which situation will have the highest resistance? a.long wire and high temperatureb.short wire and high temperaturec.long wire and cold temperaturedshort wire and low temperature
Answers: 2
Physics, 22.06.2019 17:20
Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.
Answers: 1
Physics, 22.06.2019 18:30
Two trains leave a station at the same time, train a travels at a constant speed of 16 m/s. train b starts at 8.0 m/s but accelerates constantly at 1.0 m/s squared. after 10.0 seconds, which train has the greater speed?
Answers: 1
The laser pointer emits light because electrons in the material are excited (by a battery) from thei...
English, 03.02.2020 00:58
History, 03.02.2020 00:58
English, 03.02.2020 00:58
History, 03.02.2020 00:58
Health, 03.02.2020 00:58
Mathematics, 03.02.2020 00:58
Biology, 03.02.2020 00:58
History, 03.02.2020 00:58
Physics, 03.02.2020 00:58
History, 03.02.2020 00:58
Biology, 03.02.2020 00:58