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  • Need explanation for: Which of the following represents that volume (V) is decreasing with time at rate of 3 cm3/ sec ?

Which of the following represents that volume (V) is decreasing with time at rate of 3 cm3/ sec ?

  • Option 1) dv/dt=-3

     

  • Option 2)  dv/dt=3

     

  • Option 3) dv/dt=1/3

     

  • Option 4) dv/dt=-1/3

     

 

Answers (1)

best_answer

As we have learned\because

Sign convention for Rate measurement -

If it is increasing then it is positive otherwise negative.

-

 

 volume is decreasing with time , so dv/dt<0


Option 1)

\frac{dV}{dt} = -3

Option 2)

\frac{dV}{dt} = 3

Option 3)

\frac{dV}{dt} = \frac{1}{3}

Option 4)

\frac{dV}{dt} = -\frac{1}{3}

Posted by

Himanshu

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