Consider the five facts listed below. The nebular theory of the formation of the solar system successfully accounts for four of these facts, while one can be considered to be just a coincidence. Which fact is a coincidence?
A) Our solar system has an equal number of terrestrial and jovian planets.
B) The planets all orbit around the Sun in nearly circular orbits in nearly the same plane.
C) The planets divide into two major types, terrestrial and jovian.
D) The solar system has many small bodies, and these are concentrated in the regions known as the asteroid belt, Kuiper belt, and the Oort cloud.
E) There are many impact craters on the Moon.
A) Our solar system has an equal number of terrestrial and jovian planets.
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A small car has a head-on collision with a large truck. Which of the following statements concerning the magnitude of the average force due to the collision is correct?
A) The truck experiences the greater average force. B) The small car experiences the greater average force. C) The small car and the truck experience the same average force. D) It is impossible to tell since the masses are not given. E) It is impossible to tell since the velocities are not given.
Why are brown dwarfs easier to spot in a young, star forming region like Orion rather than an old group of stars like a globular cluster?
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Cities have higher rates of lung disease than rural areas
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A square loop (length along one side = 20 cm) rotates in a constant magnetic field which has a magnitude of 2.0 T. At an instant when the angle between the field and the normal to the plane of the loop is equal to 20° and increasing at the rate of 10°/s, what is the magnitude of the induced emf in the loop?
a. 13 mV b. 0.27 V c. 4.8 mV d. 14 mV e. 2.2 mV