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Week 4 Question 8

 
 
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Week 4 Question 8
TangErik - 2021年01月26日 Tuesday 17:32
 

I think this answer might be wrong...? Shouldn't the frequency increase? My answer I get is 1293

 
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Re: Week 4 Question 8
ProfessorAreteem - 2021年01月26日 Tuesday 21:26
 

Hi Erik. For which class is this? Please remember to let us know which class you are referring to when you post on the forum.

 
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Re: Week 4 Question 8
TangErik - 2021年01月27日 Wednesday 13:13
 

I said it's week 4. Or are you asking which course? It's the thermodynamics one.

 
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Re: Week 4 Question 8
ProfessorAreteem - 2021年01月27日 Wednesday 13:39
 

It seems you are not using the correct velocity. Note the problem states that "right is positive", and you are moving to the left, so the velocity at which you are moving is $-18$ meters per second.

 
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