Physical therapists know as you soak tired muscles in a hot tub, the water will cool down as you heat up. if a 67.9 person at 37.1 oc immerses in 50.2 kg of water at 40.5o c, the equilibrium temperature is 38.7 oc. what is the specific heat of the person? use 4.186 kj/kgoc for the specific heat of water. answer to 3 significant figures in kj/kgoc .

12000j is work done

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.