#### Dx

This cant be right.

I missed this test question here.

You shout at a cliff and hear the echo in 4s. the temp is 0 degrees C. How far away is the cliff?

I think the answers were a)662 b) 680 c) 1320 d)1760

I chose c because

t=d/s or d=t*s

now, i substitued d = 4s * 331m/s = 1324

why did i miss this? I am pretty sure the formula and math is

right?

also one more question

when you double your distance from a sound source radiating in all directoins. what happens to the intensity of the sound? is reduces to 1/2 its orginal value.

Thats what i said unless its 1/4. what is the right answer.

Dx

I missed this test question here.

You shout at a cliff and hear the echo in 4s. the temp is 0 degrees C. How far away is the cliff?

I think the answers were a)662 b) 680 c) 1320 d)1760

I chose c because

t=d/s or d=t*s

now, i substitued d = 4s * 331m/s = 1324

why did i miss this? I am pretty sure the formula and math is

right?

also one more question

when you double your distance from a sound source radiating in all directoins. what happens to the intensity of the sound? is reduces to 1/2 its orginal value.

Thats what i said unless its 1/4. what is the right answer.

Dx

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