Adiffraction grating with 240 lines per mm is used in an experiment to study the visible spectrum of a gas discharge tube. at what angle from the beam axis will the third order peak occur if the tube emits light with wavelength of 511.3 nm?

Calculate the amount of heat produced when 18000 coulombs of charge is transferred in one hour through a potential difference of 50v

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?

Explain why electric current cannot exist if a current doesn't have a voltage source.