Monday

November 24, 2014

November 24, 2014

Posted by **Pat** on Monday, May 21, 2012 at 5:11pm.

The speed of sound through air at 20°C is v = 343 m/s.

- physics -
**Elena**, Monday, May 21, 2012 at 5:20pmDownward motion of the stone:

h =g•t1²/2, t1 =sqrt(2•h/g) = sqrt(2•150/9.8) = 5.5 s.

Upward motion of sound:

h = v•t2.

t2 = h/v = 150/343 =0.44s.

t =t1+t2 =5.5 +0.44 =5.94 s.

**Answer this Question**

**Related Questions**

physics - A boy drops a stone-A, down from a cliff 480 meters high, next he ...

physics - A spelunker (cave explorer) drops a stone from rest into a hole. The ...

physics - A spelunker (cave explorer) drops a stone from rest into a hole. The ...

physics - A spelunker drops a stone from rest into a hole. The speed of sound is...

Physics(Please help) - 1) A cave explorer drops a stone from rest into a hole. ...

physics - A stone is dropped into a river from a bridge 45.4 m above the water. ...

physics - A stone is dropped into a river from a bridge 45.4 m above the water. ...

physics - A stone is dropped into a river from a bridge 45.4 m above the water. ...

physics - A stone is dropped into a river from a bridge 43.3 m above the water. ...

physics - A stone is dropped into a river from a bridge 41.7 m above the water. ...