Ineed on problem 2.5
i would like an explanation of how you got your answer.

0.424

Explanation:

The electrical energy is the electrical power times time:

E = Pt

E = (IV)t

E = (1.5 A) (110 V) (300 s)

E = 49,500 J

The heat absorbed by the cookie dough is the mass times specific heat capacity times increase in temperature:

Q = mCΔT

Q = (1 kg) (4200 J/kg/K) (5 K)

Q = 21,000 J

So the fraction of electrical energy converted to internal energy is:

Q / E = 21,000 / 49,500

Q / E = 0.424

The remainder of the electrical energy is used to do work.

answer: 500 wph.

explanation:

answer:

a

explanation: