When U-239 emits a beta particle, the resulting nucleus has
A) 90 protons.
B) 91 protons.
C) 92 protons.
D) 93 protons.
E) 94 protons.
Answer: D
You might also like to view...
North-zenith-south line which divides the sky into two halves
An airplane is traveling at 250 m/s in level flight. If the airplane is to make a change in direction, it must travel is a horizontal curved path. To fly in the curved path, the pilot banks the airplane at an angle such that the lift has a horizontal component that provides the horizontal centripetal acceleration to move in a horizontal circular path. If the airplane is banked at an angle of 15.0 degrees, then the radius of curvature of the curved path of the airplane is
A. 20.1 km. B. 23.8 km. C. 25.0 km. D. 27.5 km. E. 30.1 km.
Voltage can also be called potential
a. True b. False Indicate whether the statement is true or false
The critical angle for a substance in air is measured at 53.7°. If light enters this substance from air at 45.0° with the normal, at what angle with the normal will it continue to travel?
A) 34.7° B) 53.7° C) 45.0° D) It will not continue, but will be totally reflected.