A feature of the quantum model of the atom that is not a feature of the Greek or planetary models is that
A) the quantum model is only a theory, whereas the other two models are supported by factual evidence.
B) the quantum model of the atom cannot be visualized.
C) Both of the above.
D) the quantum model can explain electrical effects.
E) All of the above.
B
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Snell's Law: A beam of light traveling in air strikes a slab of transparent material. The incident beam makes an angle of 40° with the normal, and the refracted beam make an angle of 26° with the normal. What is the speed of light in the transparent material? (c = 3.0 × 108 m/s)
A. 1.0 × 108 m/s B. 2.0 × 108 m/s C. 2.3 × 108 m/s D. 3.0 × 108 m/s E. 0.50 × 108 m/s
The most well-known impact crater in North America is
A) Crater Lake in Oregon B) Meteor Crater in Arizona C) Great Crater in Iowa D) Odessa Crater in Texas
Power: A 5.0-V battery storing 43.0 kJ of energy supplies 1.5 A of current to a circuit. How much energy does the battery have left after powering the circuit for 1.0 h?
A. 16 kJ B. 27 kJ C. 43 kJ D. 41 kJ
An airplane increases its speed at the average rate of 15 m/s2. How much time does it take to increase its speed from 100 m/s to 160 m/s?
A) 17 s B) 0.058 s C) 4.0 s D) 0.25 s