Two speakers face each other, and they each emit a sound of wavelength λ. one speaker is 180∘ out of phase with respect to the other. if we separate the speakers by a distance 1.5λ, how far from the left-most speaker should we place a microphone in order to pick up the loudest sound? ignore reflections from nearby surfaces. select all that apply.

The answer is

a). 0λ

b). λ

c). 1/2 λ

The explanation:

-when The speakers represent antinodes of the resulting standing wave pattern.

-when other points along the medium that undergo vibrations between a large positive and large negative displacement. These are the points that undergo the maximum displacement during each vibrational cycle of the standing wave. In a sense, these points are the opposite of nodes, and so they are called antinodes.

-In order to pick up the loudest sound the following distances should work:

a). 0λ

b). λ

c). 1/2 λ

c. 7/3

step-by-step explanation:

a rational number is like pi- it is a repeating decimal.

a. is -1.8

b. 2.236068

c. 2.3333333333333333333

d.   is 3

i hope that ! =)

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min