Michelson and Morley concluded from the results of their experiment that
A)
the experiment was a failure since there was no detectable shift in the interference pattern.
B)
the experiment was successful in not detecting a shift in the interference pattern.
C)
the experiment was a failure since they detected a shift in the interference pattern.
D)
the experiment was successful in detecting a shift in the interference pattern.
A
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On this graph, the black curve represents actual temperature measurements, the red curve represents models of the climate that include human emissions of greenhouse gases, and the blue curve represents models of the climate that include only natural factors but do not include human emissions of greenhouse gases. What is the key message that can be read from this graph?
A) Models support the conclusion that human emissions are driving global warming. B) Different climate models give different predictions about how much global warming should be occurring. C) Climate models can successfully reproduce Earth's climate for the first half of the 20th century, but after that, they are unable to account for actual temperature data. D) Although some models support the idea that global warming is caused by human activity, other models do not and the cause therefore remains controversial.
Ohm's Law: The current through a piece of lab equipment must be limited to 2.75 A when it is run by a 120-V dc power supply. What must be the resistance of this equipment?
Fill in the blank(s) with the appropriate word(s).
Answer the following statement(s) true (T) or false (F)
1. Consider an infinite solenoid. Imagine placing a mirror so that mirror’s plane contains the solenoid’s central axis. Such a mirror would satisfy the conditions of the mirror rule. 2. An infinite solenoid’s magnetic field is uniform everywhere in the solenoid’s hollow interior.
A photon is quantum of electromagnetic radiation
a. True b. False Indicate whether the statement is true or false