A graduated cylinder
A graduated cylinder contains 155 of water. A 16.0 piece of iron (density = 7.86 ) and a 19.0 piece of lead are added. What is the new water level in the cylinder?
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A beam of light consisting of wavelengths from 460 nm to 640 nm is directed perpendicularly onto a diffraction grating with 160 lines/mm.
The generator is connected across a 20.0-V resistor. By inspection, what are the (a) maximum voltage and (b) frequency?
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