Physics SSS2 Second Term

Sub Theme: Conservation Principle

WEEK 8

Heat Energy Measurement II

Performance Objectives

Students should be able to;

1. Distinguish between evaporation and boiling and explain sublimation.

2. Explain the working principles of such common device as refrigerator.

3. Explain the effects of humidity on personal comfort.

Application of Latent Heat

Content

Example 1:

Calculate the energy required to vaporize 50g of water initially at 80⁰C . [Specific heat capacity of water = 4.2Jg^-1K^-1; specific latent  heat of vaporization of water = 2260Jg^-1]

Solution:

Q = Heat required to raise the temperature of water from 80⁰C to 100⁰C  +  Heat required to vaporize water

Q = mcw(θ2 − θ1) + ml Q =.... View More Subscribe now to gain full access to this lesson note Take Me There Click here to gain access to the full notes. Subject Scheme & Timeline: Linear momentum I Linear momentum II Mechanical Energy I Mechanical Energy II Heat Energy I, Temperature and its measurement Physic SSS2 Second Term Mid-Term Assessment - Test Heat Energy 1 Heat Energy Measurement I Heat Energy Measurement II Gas Law I Gas Law II Physic SSS2 Second Term Final Assessment - Test Chapters 12 Category SSS2 Author ClassNotes Edu Bulk Purchase For Schools & Teachers Discounted Price For Schools and Teacher who want to subscribe to all of the subjects, a class or term at a discounted price. Order Now Custom Bundle Create Your Bundle Discounted Price Need many subjects? Waste no time. Select many subjects together in one subscription at a discounted price. Create Bundle