On monday, john wears a red shirt and notices his co workers seem less patient with him. on wednesday, john wears a blue shirt and notices that none of his coworkers approach him, working quietly the entire day. on friday, john wears a yellow shirt and notices that everyone is cheerful and full of glee. from this, john strikes up a hypothesis to say that the mood of his colleagues must be as a result of the color of his shirt . is this true l, false, or unsubstantiated
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Physics, 22.06.2019 11:30
A100-watt light bulb illuminates a solar cell. the electricity from the solar cell operates a water pump that delivers 1 watt of power. what is the efficiency of the system?
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Which magnetic property best describes a magnet’s ability to act at a distance? magnets are dipolar. magnets attract only certain objects. magnets have magnetic fields. magnets can transfer their properties to certain materials.
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Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to
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On monday, john wears a red shirt and notices his co workers seem less patient with him. on wednesda...
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