Question

Calculate the de Broglie wavelength of: a) an electron moving through air at the speed of sound (343 m/s in air). Mass of electron: 9.11x10-31 kg. λ = nm b) a 145-g baseball pitched at 105.1 miles per hour. (1.000 mile = 1609.34 m) λ = x 10a m a =

Question 1 0/6 pts Calculate the de Broglie wavelength of: a) an electron moving through air at the speed of sound (343 m/s in air). Mass of electron: 9.11x10-31 kg. X = 0.21 nm b) a 145-g baseball pitched at 105.1 miles per hour. (1.000 mile = 1609.34 m) X = x 10am a = Answer 1: 0.21 Answer 2: (You left this blank) Answer 3: (You left this blank)

Answer 1

a) = h mv -34 6.626 x 10 9.1 X10' x 34 3 - m. -3 0.00212 8 10 -3 212 X10 m 105 -8 219 x 10 A = 2120 nm © m = or 0.145 kg v= - 145g los. I miles per hour a convert into mls = 3600 sec 105.1 mile - I sec los. I mileI sec. 3600 Convert miles into meter I mile = = 1609.34 m. Va los. 1x 1609.34 mis 3600 - 46.984 m/s .-34 34 = 0.973 Xiom de h = 6.626 X10 my 0.145 X 46.984 -35 9.73 XIOM 2- ac -35