According to quantum physics, measuring the temperature of lava from a distant volcano by photographing its color with a telescopic camera measurably affects the lava's temperature
A) True
B) False
C) both of these depending on circumstances
Answer: B
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Write the node equations for the nodes 1 and 2 of the model of the oak beam sketched in Figure 2-32.
A heavily loaded boat is floating in a pond. The boat sinks because of a leak. What happens to the surface level of the pond?
a. It stays the same. b. It goes up. c. It goes down. d. More information is needed to reach a conclusion.
A telescope with a 60 mm objective lens collects how many times as much light as does your eye's 6 mm exit pupil?
A) 5 times B) 10 times C) 25 times D) 100 times E) 250 times
Capacitors in Combination: A system of four capacitors is connected across a 90-V voltage source as shown in the figure.(a) What is the potential difference across the plates of the 6.0-µF capacitor?(b) What is the charge on the 3.0-µF capacitor?
Fill in the blank(s) with the appropriate word(s).