Consider the function ? (x) = Ax 2 + B, where A and B are constants. Is this function a possible quantum wave function under the right circumstances?
A. Yes.
B. Yes, but only for certain values of A and B.
C. Yes, but only if A and B are complex.
D. Yes, if B is zero.
E. No.
E. No.
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A. ?10 W B. +10 W C. zero D. +20 W E. ?20 W
A boy kicks a football from ground level with a certain initial velocity at an angle 30.0° above the horizontal. In 2.00 seconds the ball completes its trajectory and hits the ground. What is the initial velocity of the ball?
A) 9.80 m/s B) 4.90 m/s C) 39.2 m/s D) 19.6 m/s E) 78.4 m/s
A fundamental force in nature is the
a. strong interaction. b. weak interaction. c. electromagnetic interaction. d. gravitational interaction. e. all of the above
A 60-mC charge is held fixed at the origin and a -20-mC charge is held fixed on the x axis at a point x = 1.0 m. If a 10-mC charge is released from rest at a point x = 40 cm, what is its kinetic energy the instant it passes the point x = 70 cm?
a. 9.8 J b. 7.8 J c. 8.8 J d. 6.9 J e. 2.8 J