Radioactivity Basics: When an unstable nucleus decays by emitting an alpha particle, the atomic number Z of the nucleus
A. increases by 4.
B. increases by 2.
C. decreases by 2.
D. decreases by 4.
E. remains unchanged.
Answer: C
You might also like to view...
An ambulance is generating a siren sound at a frequency of 2,400 Hz. The velocity of sound is 345.0 m/s. If the observer is traveling at a velocity of 24.00 m/s toward the stationary ambulance, then what is the frequency of the siren perceived by the observer?
A. 2,640 Hz B. 2,567 Hz C. 2,520 Hz D. 2,508 Hz E. 2,475 Hz
The surface of Venus has been studied
a. using radar maps made from Earth. b. using radar maps made from satellites orbiting Venus. c. using spacecraft that have landed on the surface of Venus. d. all of the above e. only b and c
What is the inductive reactance of a 2.50-mH coil at 1000 Hz?
A) 2500 ? B) 796 ? C) 15.7 ? D) 2.50 ?
Two hockey pucks are initially at rest on a horizontal plane of frictionless ice. Puck A has twice the mass of puck B. Suppose we apply the same constant force on each puck until each puck has crossed a finish line 1 m away from its starting point. How do the puck’s kinetic energies compare when each crosses the finish line?
A. KA = 4KB B. KA = 2KB C. KA = KB D. KB = 2KA E. KB = 4KA F. Some other relationship (specify)