Window Help SHANE MOARENDERSON nSERSO-Engiering Physics 101-Engineering Physics

Question

Window Help SHANE MOARENDERSON nSERSO-Engiering Physics 101-Engineering Physics e Resources Discussions Assessment Tools Question 18 (1 point) A student measures the volume of a cylindrical tube He determines that the uncertainty of the measured dameter is 7893 20?20% 1 12 13 34 15 O13 6 1718 1920 03% Question 19 (1 poind 72 km/hour Your reaction tine betore stepping on the brakes is O 5 seconds, and the maximum deceleration of the car is 10 How much distance i s there between 27 MacBook Air 18 4)

Explanation / Answer

13% is the correct answer.

we know,

Volume V = pi*r^2*h

or V = pi*(D/2)^2*h

V = (pi/4)*D^2*h

so,

delta_V/V = 2*delta_D/D + delta_h/h

delta_V/V*100 = 2*delta_D/D*100 + delta_h/h*100

percentage error in Volume = 2* percentage error in D + percentage error in h

= 2*5 + 3

= 13% <<<<<------Answer

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