Answers: 3
Physics, 22.06.2019 05:00
Modern physics a photon emitted from an excited hydrogen atom has an energy of 3.02 electron volts. which electron energy-level transition would produce this photon? a. n=1 to n=6 b. n=2 to n=6 c. n=6 to n=1 d. n=6 to n=2 i chose b but the correct answer is d can someone tell me why? and what's the difference?
Answers: 1
Physics, 22.06.2019 16:50
Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =
Answers: 1
Physics, 22.06.2019 21:00
Ais a machine that makes work easier when a single force is applied. a simple machine b compound machine c endangered machine d complex machine
Answers: 2
Which does a reference point provide? a position from which to measure future distance a set of stan...
Chemistry, 15.11.2021 01:00
Mathematics, 15.11.2021 01:00
Mathematics, 15.11.2021 01:00
Biology, 15.11.2021 01:00
English, 15.11.2021 01:00
Mathematics, 15.11.2021 01:00
Mathematics, 15.11.2021 01:00
Mathematics, 15.11.2021 01:00
Mathematics, 15.11.2021 01:00
Biology, 15.11.2021 01:00