In the case of magnification, if image distance (p) is positive, the image is to the ______ of the lens and ______
a. right b. left
c. real d. imaginary
e. virtual
a, c
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Current: When a current flows through a metal wire, the moving charges are
A. only protons. B. only electrons. C. both protons and electrons. D. positive metal ions. E. negative metal ions.
A bird flies 3.0 KM due west and then 2.0 KM due north. what is the magnitude of the bird's displacement?
A. 2.0 km B. 3.0 km C. 3.6 km D. 5.0 km
Rays with the shortest wavelengths have the
A) highest frequencies and energies. B) lowest frequencies and energies. C) lowest frequencies but highest energies.
Terrence goes for a walk. He walks 2.0 km north, then turns and walks 4.0 km south of east. What is his displacement vector? Take east to be in the +-direction and north to be in the +-direction.
a. (2.0 + 4.0 ) km b. (2.8 – 0.8 ) km c. (4.8 + 5.7 ) km d. (5.7 – 2.8 ) km