The entanglement experiment described in the textbook demonstrates that
A) any reduction of a particle's position uncertainty is accompanied by an increase in its velocity uncertainty, as predicted by quantum theory.
B) a particle's energy is not continuous but is instead quantized in specific, discrete "bundles."
C) any attempt to observe which slit a particle goes through, in the electron double-slit experiment, causes the interference pattern to switch to a non-interference pattern.
D) two separated particles can exhibit instantaneous non-local connections, as predicted by quantum theory.
E) quantum theory's prediction of instantaneous non-local connections between separated particles is incorrect.
D
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Only two forces act on a 3.0-kg mass. One of the forces is 9.0 N east, and the other is 8.0 N in the direction of 62° north of west. What is the magnitude of the acceleration of the mass?
A. 2.0 m/s2 B. 2.4 m/s2 C. 3.3 m/s2 D. 2.9 m/s2 E. 5.7 m/s2
A lens of focal length 25 cm is placed 50 cm from an object. On the opposite side of the lens at a distance of 50 cm is a plane mirror. Where is the final image formed?
A) 50 cm from the lens on the object side B) 35 cm behind the mirror C) 35 cm in front of the mirror D) 50 cm from the lens on the mirror side E) 35 cm from the lens on the object side
Which of the following stellar spectral types is cooler than our Sun?
A. K B. F C. O D. G
Positive work can be done
a. by friction on the tires when a car is accelerating without skidding. b. by a spring when it launches a clown in the air. c. by a hand throwing a ball. d. by all of the above. e. only by (b) and (c) above.