Author Question: A uranium nucleus (mass 238 units) at rest decays into a helium nucleus (mass 4.0 units) and a ... (Read 319 times)

PhilipSeeMore · **on:** Jul 28, 2018

A uranium nucleus (mass 238 units) at rest decays into a helium nucleus (mass 4.0 units) and a thorium nucleus (mass 234 units). If the speed of the helium nucleus is 1.8 106 m/s, what is the speed of the thorium nucleus?
a. 1.0 104 m/s
c. 3.6 104 m/s
b. 3.1 104 m/s
d. 4.1 104 m/s

Question 2

An uncharged conductor is supported by an insulating stand. I pass a positively charged rod near the left end of the conductor, but do not touch it. The right end of the conductor will be:
a. neutral.
c. attracted. b. positive.
d. negative.