What is the wavelength of the sound wave that has a frequency of 340 hertz as it travels through the air at 680 m/s?

Asmall metal bar, whose initial temperature was 10° c, is dropped into a large container of boiling water. how long will it take the bar to reach 70° c if it is known that its temperature increases 2° during the first second? (the boiling temperature for water is 100° c. round your answer to one decimal place.) sec how long will it take the bar to reach 98° c? (round your answer to one decimal place.)

What happens to the light rays when they hit the specimen?

Phase changes are chemical changes. true or false