1.Consider a wave described by the equation y(x,t)) = A sin(k x + wt) where k an

Question

1.Consider a wave described by the equation y(x,t)) = A sin(k x + wt) where k and w are both positive numbers. The wave is moving inthe
a) Positive x direction
b) Positive y direction
c) Negative x direction
d) Negative y direction

2. Consider again a wave described by the equation y(x,t)) = Asin(k x + w t) where k and w are both positive numbers. A specificpoint in the medium (not the wave itself) is moving
a) In the positive x direction
b) In the positive y direction
c) In the negative x direction
d) In the negative y direction
e) Backwards and forwards in the x direction
f) Backwards and forwards in the y direction


Please if you give an answer give me a brief description as to WHYit is that answer.. that would be very helpful! Thank you!

Explanation / Answer

1.Consider a wave described by the equation y(x,t)) = A sin(k x + wt) where k and w are both positive numbers. The wave is moving inthe a) Positive x direction b) Positive y direction c) Negative x direction d) Negative y direction in general the wave traveling toward +ve Xaxis is representedby y(x,t)) = A sin(k x - w t) here the eq is given as y(x,t)) = Asin(k x + w t) hence the wave is traveling inthe -ve X direction.so option C iscorrect. 2. Consider again a wave described by the equation y(x,t)) = Asin(k x + w t) where k and w are both positive numbers. A specificpoint in the medium (not the wave itself) is moving the particle is in shm so it is moving along Y axis to andfro.hence F is correct option. a) In the positive x direction b) In the positive y direction c) In the negative x direction d) In the negative y direction e) Backwards and forwards in the x direction f) Backwards and forwards in the y direction

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