Physics Laboratory Experiments

Jerry D. Wilson, Cecilia A. Hernandez-Hall

Chapter 20 Specific Heats of Metals - all with Video Answers

Educators

Chapter Questions

Problem 1

(a) The percent errors of your experimental values of the specific heats may be quite large. Identify several sources of experimental error.
(b) Why does it improve the accuracy of the experiment if $T_{\mathrm{f}}-T_{\mathrm{r}}=T_{\mathrm{r}}-T_{\mathrm{w}} ?$

Karan Soni

Numerade Educator

01:05

Problem 2

The specific heat of aluminum is $0.22 \mathrm{cal} / \mathrm{g}-{ }^{\circ} \mathrm{C}$. What is the value of the specific heat in
(a) $\mathrm{kcal} / \mathrm{kg}-{ }^{\circ} \mathrm{C}$,
(b) $\mathrm{J} / \mathrm{kg}-{ }^{\circ} \mathrm{C}$ ? (Show your calculations.)

Nicole Smina

Numerade Educator

05:02

Problem 3

(a) If wet shot had been poured into the calorimeter cup, how would the experimental value of the specific heat have been affected?

Banhishikha Sinha

Numerade Educator

01:16

Problem 4

In solar heating applications, heat energy is stored in some medium until it is needed (for example, to heat a home at night). Should this medium have a high or a low specific heat? Suggest a substance that would be appropriate for use as a heat storage medium, and explain its advantages.

Ma Ednelyn Lim

Numerade Educator

02:44

Problem 5

Explain why specific heat is specific, and how it gives a relative indication of molecular configuration and bonding.

Will Li

Numerade Educator