A sound source is placed in the center of a very wide and long room that has a low ceiling. Assume that the ceiling and floor are constructed of a material that absorbs the sound completely. In this situation, how would the intensity of the sound heard vary if a person moves from a distance of 10 meters from the source to a distance of 20 meters from the source?
1.The sound would have about the intensity 20 m from the source that it has 10 m from the source.
2.The sound would have about the intensity 20 m from the source that it has 10 m from the source.
3.The sound would have about the same intensity 20 m from the source that it has 10 m from the source.
4.The sound would have about twice the intensity 20 m from the source that it has 10 m from the source.
Question 2
A ringing alarm clock is placed in a bell jar, which is then sealed, and the air is pumped out of it. Which effect will most likely occur?
1.The sound of the ringing alarm clock will get louder as the air is pumped out.
2.The sound of the ringing alarm clock will get softer as the air is pumped out.
3.No noticeable change will occur as the air is pumped out.
4.The sound will diminish completely immediately after the air has begun to be pumped out.
Nurses possess a wide variety of experiences which they take into each patient encounter.
Components of a long bone. The entire long bone is on the left side accompanied by a blowup of the p
Role of PKM-zeta in Long-Lasting Long-Term Potentiation
Flynn Effect IQ scores have risen across developed countries in recent decades. Source: Flynn (199
A physician uses a portable electronic tablet to enter patient data while in the examination room.
Homeschooling has come a long way. These children are performing in a musical at the annual ...