For general projectile motion, when the projectile is at the highest point of its trajectory
A) its acceleration is zero.
B) its velocity is perpendicular to the acceleration.
C) its velocity and acceleration are both zero.
D) the horizontal component of its velocity is zero.
E) the horizontal and vertical components of its velocity are zero.
B
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An electron beam directed through a magnetic field
A) may be deflected. B) may experience a force. C) both of these D) neither of these
A layer of kerosene (n = 1.45) is floating on water (n = 1.33). For what angles of incidence at the kerosene-water interface will light be totally internally reflected within the kerosene?
Gaussian surfaces A and B enclose the same positive charge +Q. The area of Gaussian surface A is three times larger than that of Gaussian surface B
The electric flux through Gaussian surface A is A) three times larger than the flux of electric field through Gaussian surface B. B) three times smaller than the flux of electric field through Gaussian surface B. C) equal to the flux of electric field through Gaussian surface B. D) nine times larger than the flux of electric field through Gaussian surface B. E) unrelated to the flux of electric field through Gaussian surface B.
Two concentric conducting spheres of radii a = 5 cm and b = 10 cm have a potential difference V = 100 V between them. What is the charge carried by each sphere?
A) 100 nC B) 5.5 nC C) 1.1 nC D) 10 nC E) 2.2 nC