Atrain moves east with a speed of 31 m/s. a man on the train walks west
with a speed of 0.7 m/s relative to the train. how long does it take the man to
move 34 m relative to the train?
o a. 1.1 s
o b. 37 s
o c. 255
d. 49 s.

The de broglie relation λ=h/p can be rewritten in terms of the wave number k as p=kℏ. recall that wave number is defined by k=2π/λ. using the fact that λ=v/f, find the wave numbers k1 and k2 corresponding to frequencies f1 and f2. express your answer as two expressions

Calculate the work done by an external agent during an isothermal compression of 1.00 mol of oxygen from a volume of 22.4 l at 10∘c and 1.0 atm pressure to 16.8l

Which of the following are not typically included in the periodic table? a. atomic mass b. element symbol c. isotopes d. number of electrons