Assume a change at the source of sound reduces the wavelength of a sound wave in air by a factor of 7. (i) What happens to its frequency? It increases by a factor of 49. It increases by a factor of 7. It is unchanged. It decreases by a factor of 7. It changes by an unpredictable factor. (ii) What happens to its speed? It increases by a factor of 49. It increases by a factor of 7. It is unchanged. It decreases by a factor of 7. It changes by an unpredictable factor.

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.

A15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°c to 175°c. what is the specific heat capacity of iron?

What is the difference between mass density and weight density?