2. in which of the following conditions would a person not hear an echo?
o a. the reflecting...
2. in which of the following conditions would a person not hear an echo?
o a. the reflecting source is approximately 21.5 meters from the person.
o b. a sound wave reaches the ear, and the reflected wave reaches the ear less than 0.1 seconds later.
oc. a person is standing in the range of the sound waves coming from the original sound source as well as the reflected waves.
o d. a person is standing 30 meters in front of the reflecting surface.
Answers: 3
Physics, 21.06.2019 15:30
If you have a bowl with six apples and you take away four, how many do you have? anyone take a guess and post it. lol getting rid of my account might as well do it with some fun
Answers: 3
Physics, 22.06.2019 05:30
An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?
Answers: 2
Physics, 22.06.2019 08:00
Which notation is used to represent an alpha particle? a. b. c. d.
Answers: 1
Mathematics, 02.02.2020 21:58
Mathematics, 02.02.2020 21:58
Mathematics, 02.02.2020 21:59
English, 02.02.2020 21:59
Physics, 02.02.2020 21:59
Mathematics, 02.02.2020 21:59
Mathematics, 02.02.2020 21:59
Mathematics, 02.02.2020 21:59
Mathematics, 02.02.2020 21:59