   Chapter 29, Problem 76PE

Chapter
Section
Textbook Problem

Integrated Concepts(a) Calculate the amount of microwave energy in joules needed to raise the temperature of 1.00 kg of soup from 20.0°C to 100°C. (b) What is the total momentum of all the microwave photons it takes to do this? (c) Calculate the velocity of a 1.00-kg mass with the same momentum. (d) What is the kinetic energy of this mass?

To determine

(a)

The amount of microwave energy in joules needed to raise the temperature of1.00kg soup from20C to100C.

Explanation

Given Data:

Given that the temperature of1.00kg soup is raised from20C to100C ..

Formula Used:

Energy is calculated using below equation of heat

Q=mCΔT

Wherem= Mass of electron

C= Specific heat

ΔT= Change in temperature

Calculation:

We havem=1.00kg

C=4186J/kg

To determine

(b)

The amount of microwave energy in joules needed to raise the temperature of1.00kg of soup from20C to100C is3.35×105J . What is the total momentum of all the microwave photons it takes to do this.

To determine

(c)

The amount of microwave energy in joules needed to raise the temperature of1.00kg of soup from20C to100C is3.35×105J . The total momentum of all the microwave photons is1.12×103kg.m/s . Calculate the velocity of a1.00kg mass with the same momentum.

To determine

(d)

The velocity of a1.00kg mass is1.12×103m/s . What is the kinetic energy of this mass?

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