In interactions taking place by the strong force, which of the following quantities are conserved?
a. electric charge
b. baryon number
c. mass-energy
d. strangeness
e. linear momentum
f. angular momentum (spin)
A, B, C, D, E, F
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Which of the following statements best describes the relation between the quantum theory and the photoelectric effect experiment?
a. Quantum theory explains the photoelectric effect. b. The photoelectric effect contradicts quantum theory. c. Quantum theory has no bearing on the photoelectric effect. d. The photoelectric effect explains quantum theory.
A tiger is running in a straight line. If we double both the mass and speed of the tiger, the magnitude of its momentum will increase by what factor?
A) 8 B) 4 C) D) 16 E) 2
pH measures
What will be an ideal response?
The ____ of an object depends on the diameter of the object and the distance to the object
a. apparent brightness b. apparent magnitude c. zenith d. angular diameter e. color