42.6 is the answer I believe because you would do 2,560 divided by 60 if I'm correct.
Angular momemtum : mass * tangential speed * distance to the center = 50*2.1*3.6=37800 J.s
Heat engines are less than 100% efficient because absolute zero cannot be reached
Answer:
1.25kg
Explanation:
Simply multiply volume and density together
Answer: a) for 150 Angstroms 6.63 *10^-3 eV; b) for 5 Angstroms 6.02 eV
Explanation: To solve this problem we have to use the relationship given by De Broglie as:
λ =p/h where p is the momentum and h the Planck constant
if we consider the energy given by acceleration tube for the electrons given by: E: e ΔV so is equal to kinetic energy of electrons p^2/2m
Finally we have:
eΔV=p^2/2m= h^2/(2*m*λ^2)
replacing we obtained the above values.
