An electron has a kinetic energy of 10 eV. What is the wavelength of this electron?
A)
5.9 × 106 m
B)
1.2 × 10-10 m
C)
1.9 × 106 m
D)
3.9 × 10-10 m
E)
3.8 × 10-6 m
D
You might also like to view...
Radial velocity is that component of an object's velocity that is directed perpendicular to an observer's line of sight
Indicate whether the statement is true or false
A thin-walled cylindrical tank, under internal pressure p, is compressed by a force F 5 75 kN. Cylinder diameter is d 5 90 and wall thickness t 5 5.5 mm. Allowable normal stress is 110 MPa and allowable shear stress is 60 MPa. The maximum allowable internal pressure pmax is approximately:
(A) 5 MPa
(B) 10 MPa
(C) 13 MPa
(D) 17 MPa
What do retro reflectors do?
a. Serve as a substitute for tail lights on cars. b. Cause light to pass through a mirror instead of reflecting it back. c. Cause light to reflect back in a straight line parallel to the direction it hits the mirror. d. Change the color at which light reflects back from a mirror by using filters. e. Cause the light to reflect at a right angle to the direction it hits the mirror.
The number of cycles of a periodic process that occur per unit time is called
a. amplitude. b. frequency. c. period. d. wavelength. e. speed.