Any particle with spin obeys the Pauli exclusion principle
Indicate whether the statement is true or false
F
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Which statement about the motion of the planets is INCORRECT?
A) Most orbit above the Sun's equator. B) All revolutions of major planets are counterclockwise. C) The orbits of most planets are almost circular, with low eccentricities. D) Most planets move in the Earth's equatorial plane. E) Most planets rotate in the counterclockwise direction when viewed from the North.
If a charged particle is moving in a uniform magnetic field, its path can be:
a. a straight line. c. a helix. b. a circle. d. any of these choices.
In part (a) of this figure, three identical, equally spaced objects are dropped. In part (b), the two green blocks are moved closer together before they are dropped. In part (c), the two green blocks are combined to form one larger block. Contrasting Galileo's and Aristotle's views, what is the most plausible statement about the speed of the large green block compared with that of the small red
block? a. The green block must fall faster because it is more massive. b. The green block can be seen as two side-by-side smaller blocks falling at the same rate, hence the larger and smaller blocks fall at the same rate. c. The larger and smaller blocks fall at the same rate only in a vacuum. d. The larger block speeds up the fall of the lighter block, but only if they are tied together. e. The lighter block slows the fall of the heavier block, but only if they are tied together.
A 1.0-kg object moving 9.0 m/s collides with a 2.0-kg object moving 6.0 m/s in a direction that is perpendicular to the initial direction of motion of the 1.0-kg object. The two masses remain together after the collision, and this composite object then collides with and sticks to a 3.0-kg object. After these collisions, the final composite (6.0-kg) object remains at rest. What was the speed of the 3.0-kg object before the collisions?
A. 15 m/s B. 10 m/s C. 5.0 m/s D. 20 m/s E. 25 m/s