Qual a aplicação pratica, onde utiliza, o conhecimento da dilatação linear, superficial e volumétrica

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.)

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87