Nikolas had an idea that he could use the compressed carbon dioxide in a fire extinguisher to propel him on his skateboard. nikolas, the fire extinguisher, and the skateboard have a combined mass of 50 kg. what force would the fire extinguisher have to produce to propel nikolas if he wanted to accelerate at a rate of 1.2 m/s2? round your answer to the nearest whole newton. 60 n which of newton’s laws did nikolas have to use to calculate this force?

If you quadruple the temperature of a black body, by what factor will the total energy radiated per second per square meter increase? 1,024 64 16 4 256 submit answer

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?

Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.