quiz10 phys 1004 - 1. An object in simple harmonic motion...

Info iconThis preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon
1.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
An object in simple harmonic motion moves with amplitude 4.0 cm and frequency 4.0 Hz, and at t = 0 s it  passes through the equilibrium point moving to the right towards +x. Which of the following equations  correctly describes the objection's position as a function of time?    Stud ent  Res pon se Valu e Corr ect  Ans wer Fee dba ck A.  x(t) =  (4.0  cm)  cos[( 8.0 π   rad/s )t] 0%       B.  x(t) =  (4.0  cm)  cos[( 4.0 π  
Background image of page 2
2.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
What is the phase constant  φ o  of the oscillation shown below ? Note that the amplitude of the oscillation is 10 cm.    Stud ent  Res pon se Valu e Corr ect  Ans wer Fee dba ck A.  -60 o      B. 
Background image of page 4
3.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
An inductor with a 2.0 A current stores energy. At what current will the stored energy be twice as large?    Stud ent  Res pon se Valu e Corr ect  Ans wer Fee dba ck A.  0.8  A      B.  4.0  A      C.  2.8  A
Background image of page 6
4.
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
  An electric oscillator is made with a 0.26 μF capacitor and a 3.4 mH inductor. The capacitor is initially charged to 6.8 volts. What is the maximum current through the inductor as the circuit oscillates ? Express your answer in units of  milliAmperes (mA) , and to  two significant figures . Note: Enter only your numerical result in the box.     Student  Response Value Correct  Answer Answer: 59   100% 59 General Feedback: In an oscillating L-C series circuit, the charge on the capacitor as a function of time is   Q(t) = Q o  cos( t +  ω φ o ) where the phase constant  φ o  allows for different starting values at t = 0, and the angular frequency of  oscillation is     = [LC] ω -0.5 The current can be found as:   I(t) = - dQ(t)/dt         = - d[Q o cos( t +  ω φ o )]/dt         = - Q o  d[cos( t +  ω φ o )]/dt         =  Q ω o  sin( t +  ω φ o )
Background image of page 8
5.
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 10
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/16/2009 for the course PHYSICS phys1004 taught by Professor Someone during the Spring '09 term at Carleton CA.

Page1 / 39

quiz10 phys 1004 - 1. An object in simple harmonic motion...

This preview shows document pages 1 - 10. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online