Physics, 10.12.2019 04:31, jagslovegirl

Two sound waves of the same frequency and amplitude are broadcast from speakers at opposite ends of a theater. in the middle of the theater, you hear a sound 6 db louder than that from either speaker. which of the following is true?

a) the two waves are in phase in the middle of the theater.

b) the two waves are 180° out of phase in the middle of the theater.

c) the two waves are 90° out of phase in the middle of the theater.

d) the two waves are 45° out of phase in the middle of the theater.

Answers: 1

Show answers

Other questions on the subject: Physics

Physics, 21.06.2019 19:30, trujillo03

What is hidden during a lunar eclipse? isn't the moon hidden?

Answers: 2

continue

Physics, 22.06.2019 12:30, lanaasad7733

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg. how much energy e must be supplied to the device? express your answer in joules.

Answers: 1

continue

Physics, 22.06.2019 13:30, livingfamyboys35

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.

Answers: 2

continue

Physics, 22.06.2019 14:00, 6224968918

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.

Answers: 1

continue

Do you know the correct answer?

Two sound waves of the same frequency and amplitude are broadcast from speakers at opposite ends of...