Two athletes jump straight up. John has twice the initial speed of Harry. Compared to Harry, John jumps
A) 0.50 times as long.
B) 1.41 times as long.
C) twice as long.
D) three times as long.
E) four times as long.
E
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Uniform Electric Fields: A region of space contains a uniform electric field, directed toward the right, as shown in the figure. Which statement about this situation is correct?
A. The potential at all three locations is the same. B. The potentials at points A and B are equal, and the potential at point C is higher than the potential at point A. C. The potential at points A and B are equal, and the potential at point C is lower than the potential at point A. D. The potential at point A is the highest, the potential at point B is the second highest, and the potential at point C is the lowest.
Briefly explain how dark matter affects the expansion rate of the universe and the significance of the term critical density in the absence of any mysterious repulsive force
What will be an ideal response?
As a bowling ball that rolls off the edge of a table falls, its horizontal component of motion
A) decreases. B) remains constant. C) increases.
An alpha particle is moving at a speed of 5 × 105 m/s in a direction perpendicular to a uniform magnetic field of strength 4 × 10-2 T
The charge on an alpha particle is 3.2 × 10-19 C and its mass is 6.6 × 10-27 kg. (a) As the alpha particle moves, its velocity is directed (b) The magnitude of the force on the alpha particle is