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Author Question: A supersonic plane passes overhead at a speed of 500 m/s. If you hear the sonic boom (shock wave) ... (Read 126 times)

HudsonKB16

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on: Jul 29, 2018
A supersonic plane passes overhead at a speed of 500 m/s. If you hear the sonic boom (shock wave) 4.00 s after the plane is directly overhead, at what altitude is the altitude the plane flying? Assume the speed of sound in air is 340 m/s.
 
  A)
 
  1.36 km
  B)
 
  2.16 km
  C)
 
  1.85 km
  D)
 
  2.45 km
  E)
 
  The plane is not flying fast enough to produce a shock wave.

Question 2

A series circuit has a resistance of 4.0 , a reactance (due to the capacitance) of 21.0 , and a reactance (due to the inductance) of 17.0 . Find the impedance of the circuit.
 
  A) 42  B) 8.0  C) 27  D) 5.7


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Ashley I

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Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

D


HudsonKB16

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  • Posts: 535
Reply 2 on: Jul 29, 2018
Excellent

kthug

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Reply 3 on: Yesterday
Wow, this really help

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