Physics, 01.11.2019 16:31 Jasmine3864
If you were going to invent a new way to power your mobile phone, which type of electromagnetic wave would be most useful to investigate?
radio waves, because they are high energy and common. gamma rays, because they are strong and safe.
x–rays, because they are low energy and safe.
ultraviolet rays, because they are moderate energy and abundant.
only respond if you are 100% sure.
Answers: 1
Physics, 21.06.2019 21:00
A150 w lamp emits light of wavelength 590 nm uniformly in all directions. what is the photon flux (photons per unit area per unit time) on a small screen at a distance 2.3 m from the lamp? assume the photons are uniformly distributed over the surface of a sphere of radius 2.3 m.
Answers: 2
Physics, 22.06.2019 12:00
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
Physics, 22.06.2019 21:30
Atoaster oven has a resistive heating element. the average rate at which it dissipates energy as thermal energy is 1.00 \(\rm kw\). in the united states, emf amplitude in household circuits is \(\mathcal e_{\max}\) = 170 \({\rm \; v}\) and the \(\rm ac\) oscillation rate is 60 \(\rm hz\). part a what is the root-mean-square current through the heating element?
Answers: 2
If you were going to invent a new way to power your mobile phone, which type of electromagnetic wave...
Mathematics, 03.06.2020 07:57
History, 03.06.2020 07:57
English, 03.06.2020 07:57
Mathematics, 03.06.2020 07:57
Chemistry, 03.06.2020 07:57
Mathematics, 03.06.2020 08:57
Social Studies, 03.06.2020 08:57
Mathematics, 03.06.2020 08:57