At a rock concert, if the speakers are placed on the floor instead of higher up on a tower, state if the intensity of the sound you would hear, from the same distance away, is the same or different and why
What will be an ideal response?
Intensity would increase due to reflections off floor.
You might also like to view...
Explain under what conditions you would use percentage error and when you would use percentage difference. Why would you sometimes use both?
Why do bridges have expansion joints?
a. They would buckle and crack otherwise. b. to let water run off c. to absorb vibrations due to traffic d. for ease in construction
Based on observations of the cosmic microwave background, the overall composition of the universe is approximately ________
A) 1% ordinary (baryonic) matter, 99% non-ordinary (nonbaryonic) dark matter B) 4% ordinary (baryonic) matter, 23% non-ordinary (nonbaryonic) dark matter, 73% dark energy C) 100% ordinary (baryonic) matter D) 15% ordinary (baryonic) matter, 85% non-ordinary (nonbaryonic) dark matter
Based on their inability to detect stellar parallax, the ancient Greeks concluded that
A. the stars must be extremely far away B. Earth must be the center of the universe C. they lacked the technology necessary for detecting stellar parallax D. either Earth is the center of the universe or stars are extremely far away