Pls help i’ll give brainliest if you give a correct answer!!

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.)

In positive numbers less than 1, the zeros between the decimal point and non zero are significant

When an object is heated it contracts. a. true b. false