Identical twins Kate and Karen are rowing their boat on a hot Summer ut"rrffinen they decide to go for a swim. Kate, whose mass is 45 kilograms, jumps offthe front of the boat at a speed of g. d0 m/sec. Kiren jumps offthe back at a speed of 4.00 m/sec. If the 7O-kilogram rowboat is moving at 1.00m/s when the girls jump, what is the speed of the rowboat after the girls jump?

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.)

Carbon-14 is a radioactive element that undergoes beta decay. which force is responsible for allowing carbon-14 to become stable? electromagnetic gravitational weak nuclear strong nuclear

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest