Question

The wave length(W) of a wave varies inversely as its frequency(F), a wave with a frequency of 1100kHz has a length of 132m. What is the length of a wave with frequency of 600kHz?

Answer 1

l is prop to 1/f
hence vf= constant

so
l1f1=l2f2
1100 x 132 = l2 x 600
l2 = 244 m

Answer 2

ty but i dont understand your work will you explain so i can make notes and do the next one

Answer 3

see if i say that a is inversely prop to b then it means that
a = k/b
where k is any constant...understand that much?

Answer 4

yes and inversely means you flip the 2nd equation?

Answer 5

yes...
and as u see a=k/b
we can say that ab=k
or the product of any a and b is constant..right?

Answer 6

right

Answer 7

so it effectively means that the product of any pair of a and b is equal to the product of any other pair of a and b...get it?
like a1 X B1 = K
and
a2 x b2 = k so we see that
a1 x b1 = a2 x b2
right?

Answer 8

so now do u get it??

Answer 9

i entered 244m and its wrong the correct answer is 242m

Answer 10

oh sorry..typo..242

Answer 11

w= k
---
f
132= k
----
1100
k=145,200

w=145,200
------
f
w=145,200
------
600
w= 242m

Answer 12

yeah...right

Answer 13

ty