____ is a set of rules that describes how atoms and subatomic particles behave
a. Kirchhoff's law
b. Black body radiation law
c. The Coulomb force
d. Quantum mechanics
e. The binding energy
D
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A 4.0 cm tall object is placed 60 cm away from a converging lens of focal length 30 cm. What is the nature and location of the image?
A) The image is real, 2.5 cm tall, 30 cm on the same side as object. B) The image is virtual, 2.5 cm tall, 30 cm on the other side of the lens. C) The image is virtual, 2.0 cm tall, 15 cm on the other side of the lens. D) The image is virtual, 4.0 cm tall, 60 cm on the same side as object. E) The image is real, 4.0 cm tall, 60 cm on the other side of the lens.
How many significant figures are there in the number 46.20?
a) 4 b) 3 c) 2 d) 5
True or False? It’s possible for a slowing car to have a positive acceleration
1.False 2.True
Find the change in entropy (in J/K) when 5.00 moles of an ideal gas undergo a free expansion from an initial volume of 20 cm3 to a final volume of 100 cm3
a. 71 b. 52 c. 67 d. 191 e. 208