The photoreceptors responsible for color vision are called
a. rods.
b. cylinders.
c. cones.
d. cans.
c
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What is the resistance of the combination of resistors?
A. 4.0 
B. 12
C. 13
D. 14
E. 15
An object moving at a constant speed requires 6.0 s to go once around a circle with a diameter of 4.0 m. What is the magnitude of the instantaneous acceleration of the particle during this time?
a. 2.2 m/s2 b. 2.7 m/s2 c. 3.3 m/s2 d. 3.8 m/s2 e. 4.4 m/s2
Conversion of Units: A jogger has a mass of 50 kg. Express her mass in grams and micrograms (µg).
A. 50,000 g; 5 × 106 µg B. 500,000 g; 500 × 106 µg C. 500,000 g; 5000 µg D. 50,000 g; 5 × 1010 µg E. 50,000 g; 50,000 µg
If two electrons are entangled, then
A) if one particle suddenly alters its wave packet, the other must also. B) both are part of a single matter wave. C) Both of the above. D) they must exert forces on each other. E) All of the above.