What is the missing particle X in the reaction 
A. e+
B. 
C. 
D. 
E. p
C.
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The figure shows a graph of the velocity as a function of time for a basketball player traveling up and down the court in a straight-line path. For the 10 s shown on the graph, find (a) the net displacement of the player. (b) the total distance run by the
What will be an ideal response?
A student has made the statement that the electric flux through one half of a Gaussian surface is always equal and opposite to the flux through the other half of the Gaussian surface. This is
a. never true. b. never false. c. true whenever enclosed charge is symmetrically located at a center point, or on a center line or centrally placed plane. d. true whenever no charge is enclosed within the Gaussian surface. e. true only when no charge is enclosed within the Gaussian surface.
As a system becomes more disordered, entropy
A) increases. B) decreases. C) remains the same.
Suppose we imagine the Sun to be about the size of a grapefruit (about 10 cm across). Which of the following describes the size and distance of Earth on the same scale?
A) Earth is the size of a marble about 25 miles away from the Sun. B) Earth is the size of a golf ball about 1 meter away from the Sun. C) Earth is the size of a point about 1 meter away from the Sun. D) Earth is the size of a point about 15 meters away from the Sun. E) Earth is the size of a golf ball about 15 meters away from the Sun.