Leptons are the fundamental particles that are the building blocks of hadrons
a. True
b. False
Indicate whether the statement is true or false
False
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Einstein won the Nobel Prize for explaining
a. general relativity. b. special relativity. c. the photoelectric effect. d. quantum mechanics.
On the H-R diagram, cool and bright stars are located in the ________ corner
a. upper left b. upper right c. lower left d. lower right
Quantum mechanics tells us that the probability of finding the electron in hydrogen at a distance between r and r + ?r in the ground state is greatest at a distance _____ a0 , where a0 is the Bohr radius.
A. 0.707 B. 1.00 C. 1.41 D. 2.00 E. 3.001/2
Two long parallel wires are placed side-by-side on a horizontal table and carry current in the same direction. The current in one wire is 20 A, and the current in the other wire is 5 A
If the magnetic force on the 20-A wire has magnitude F, what is the magnitude of the magnetic force on the 5-A wire? No external magnetic fields are present. A) 4F B) 2F C) F D) F/2 E) F/4