An organ pipe open at one end, but closed at the other, is vibrating in its fundamental mode, producing sound of frequency 1800 hz. part a if you now open the closed end, the new fundamental frequency will be if you now open the closed end, the new fundamental frequency will be

a. 3600 hz
b. 1800 hz
c. 900 hz
d. 450 hz

The new fundamental frequency will be 3600 Hz.

Explanation:

On a closed organ pipe, the fundamental frequency is given by :

.............(1)

l is the length of the pipe

v is the speed of sound

Similarly, on an open pipe the fundamental frequency is given by :

From equation (1),

So, the new fundamental frequency will be 3600 Hz. Hence, this is the required solution.

explanation:

earth's surface is mainly heated by the absorption of infrared radiation from the sun.

evaporation occurs because molecules in liquid water are warmed ( usually by the sun) and vibrate quicker, becoming less dense and rise.

condensation occurs because molecules in water vapor are cooled and therefore vibrate more slowly thus becoming more dense and eventually fall to earth.

lines of equal barometric pressure on a weather map are called: isobars : lines of equal temp on a weather map are called: isotherms.​

answer: option c.

explanation: