What particle can be found in the nucleus of an atom

Which two objects have the greatest gravitational force acting between them

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.)

Which units can be used to measure length or distance? check all that apply. gram meter kilometer liter inch