Two organ pipes, both open at one end but closed at the other, are each 1.14 m long. one is now lengthened by 2 cm. find the frequency of the beat they produce when playing together in their fundamental frequencies.
a) 0.9 hz
b) 3.4 hz
c) 2.4 hz
d) 1.3 hz

its c its is a mixture of gases

cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation:

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