A. Draw the wave that results when the two waves shown interact through destructive interference. (Image attached)
2 answers:
a) Since these waves are opposite, they will cancel one another (see fig.)
b) If we consider sound speakers, the waves may interfere and destruct each other (like on the attached figure), somewhere they will increase each other (constructive interference).
c) Echo. Go to mountains and scream (beware of avalanche), you'll wonder how many sound waves will come to you from different surfaces against you. This is used in echolocation.
PART A)
Since two waves are in opposite phase
So due to superposition of these type of opposite phase waves the resultant wave is of zero amplitude
This is known as destructive interference
PART B)
Sound from stage seem to be louder at certain seats because of constructive interference of sounds which are coming directly and coming after reflection from walls and other points
This superposition is the result where we get larger amplitude sue to superposition of same phase
PART C)
When a travelling wave bounce back in opposite direction by the change in medium boundary then this phenomenon is known as reflection of wave
If the reflected sound is in opposite phase then the superposition of such sound will give destructive interference
If reflected sound is in same phase then the resultant sounds is always constructive interference
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In the reaction between 1 molecule of bromine and 2 molecules of potassium chloride, there are six atoms in the products.
Let's consider the balanced equation for the reaction between 1 molecule of bromine and 2 molecules of potassium chloride. This is a single replacement reaction.
Br₂ + 2 KCl ⇒ 2 KBr + Cl₂
We obtain as products, 2 molecules of potassium bromide and 1 molecule of chlorine.
- 1 molecule of KBr has 2 atoms, so 2 molecules contribute with 4 atoms.
- 1 molecule of Cl₂ has 2 atoms.
- The 4 atoms from KBr and the 2 atoms from Cl₂ make a total of 6 atoms.
In the reaction between 1 molecule of bromine and 2 molecules of potassium chloride, there are six atoms in the products.
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