Your amplifier is playing a 200 hz tone. when you double the amplitude(loudness), what happens to the speed of the sound (v) and the frequency (f)? a. v doubles, f stays the same b. v doubles, f also doubles c. v stays the same, and f doubles d. v and f both stay the same e. v and f both decrease

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.