Author Question: If a tree is 15 m tall, its height expressed in feet is x ft, where x is A) less than 15. B) ... (Read 439 times)

neverstopbelieb · **on:** Jul 29, 2018

If a tree is 15 m tall, its height expressed in feet is x ft, where x is

A) less than 15. B) greater than 15.

Question 2

Two people are talking at a distance of 3.0 m from where you are and you measure the sound intensity as 1.1 10-7 W/m2. Another student is 4.0 m away from the talkers.

What sound intensity does the other student measure? Assume that the sound spreads out uniformly and undergoes no significant reflections or absorption. A) 6.2 10-8 W/m2
B) 1.5 10-7 W/m2
C) 8.3 10-8 W/m2
D) 7.8 10-7 W/m2
E) 2.5 10-8 W/m2