How many joules of heat energy are required to raise the temperature of 550 g of water from 12 C to 18 C? The specific heat capacity (cp) of water is 4.184 J/g C

Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?