Which of the following describes a condition in which an individual would not hear an echo?
a...
Physics, 25.08.2019 09:20 shortiibrownskiin
Which of the following describes a condition in which an individual would not hear an echo?
a. an individual is standing 30 meters in front of the reflecting surface.
b. an individual is standing in the range of the sound waves coming from the original sound source as well as the reflected waves.
c. a sound wave reaches the ear and the reflected wave reaches the ear less than 0.1 second later.
d. the reflecting source is approximately 21.5 meters from the individual.
Answers: 2
Physics, 22.06.2019 20:50
In a game of pool, ball a is moving with a velocity v0 of magnitude v0 = 15 ft/s when it strikes balls b and c, which are at rest and aligned as shown. knowing that after the collision the three balls move in the directions indicated and assuming frictionless surfaces and perfectly elastic impact (that is, conservation of energy), determine the magnitudes of the velocities va, vb, and vc.
Answers: 3
Physics, 22.06.2019 22:00
Should we celebrate the voyages of zheng he mini q answer key
Answers: 3
Physics, 22.06.2019 22:00
On mars a rock falls an unknown vertical distance from a resting position and lands in a crater. if it takes the rock 2.5 seconds to fall, how high is the cliff the rock fell from? mars' surface gravity is 3.8 m/s2. a. 9.5 m b. 11.9 m c. 15.2 m d. 23.8 m
Answers: 1
Mathematics, 11.11.2020 04:30
Mathematics, 11.11.2020 04:30
History, 11.11.2020 04:30
Mathematics, 11.11.2020 04:30
Mathematics, 11.11.2020 04:30
History, 11.11.2020 04:30
Spanish, 11.11.2020 04:30
Mathematics, 11.11.2020 04:30
SAT, 11.11.2020 04:30
Mathematics, 11.11.2020 04:30
Computers and Technology, 11.11.2020 04:30