Bart Simpson has chronic low back pain secondary to repeated…

Bart Simpson has chronic low back pain secondary to repeated injury from this job as a factory worker. He benefits from the use of TENS. The TENS setting that Mr. Simpson uses produces a visible contraction. Which theory of pain control is being utilized with Mr. Simpson?

A chemical reaction takes place inside a flask submerged in…

A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 6.20 kg of water at 24.9°C. During the reaction 51.9kJ of heat flows out of the flask and into the bath. Calculate the new temperature of the water bath in Celsius, do not include the unit only the value. The specific heat capacity of water under these conditions is 4.18·J·g−1K−1.