Author Question: The proton is believed to consist of what quark combination? (up, down, strange, charm, top, bottom) ... (Read 78 times)

madam-professor · **on:** Jul 27, 2018

The proton is believed to consist of what quark combination? (up, down, strange, charm, top, bottom)

A) uud
B) ddu
C) uds
D) ttb
E) bbt

Question 2

A gray (Gy) is

A) 3.70 1010 decays/s in radium.
B) the SI unit of absorbed dose = 1 J/kg = 100 rad.
C) a dosage of 2.58 10-4 C/kg.
D) the SI unit of radioactivity (= 1 decay/s).
E) 10-2 J/kg.