Question

Example 14.5: A student, weighing 45 kg,
is running with a speed of 8 km per hr on a
foot path 2 m wide. A small car, weighing
1200 kg, is moving with a speed of 60 km
per
hr on a 20 m wide road. Calculate their
de Broglie wavelengths.
Civen​

Answer 1

Step-by-step explanation:

Given A student, weighing 45 kg,is running with a speed of 8 km per hr on a  foot path 2 m wide. A small car, weighing  1200 kg, is moving with a speed of 60 km  per/   hr on a 20 m wide road. Calculate their  de Broglie wavelengths.

• First in the case of student we have
• Given m = 45 kg, v = 8 km/ hr = 8 x 5/18
•                                                  = 20 / 9 m/s
• So de Broglie wavelength λ = h / mv
•                                                  = 6.626 x 10^-34 / 45 x 20/9
•                                                  = 6.626 x 10^-34 x 9 / 900
•                                                   = 6.626 x 10 ^-36 m
• Now in the case of car we have
• Given m = 1200 kg v = 60 km / hr = 60 x 5/18
•                                                     = 50 / 3 m/s
• So de Broglie wavelength λ = h / mv
•                                                  = 6.626 x 10^-34 / 1200 x 50/3
•                                                  = 6.626 x 10^-34 x 3 / 1200 x 50
•                                                  = 6.626 x 10^-34 / 2 x 10^4
•                                                   = 3.313 x 10^-38 m

Reference link will be

https://brainly.in/question/8438969

Answer 2

this is the de broglie wavelength.

speed moving 16km\h 12k