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Author Question: A 0.10-m long metal rod has a radius of 1.0 cm and a resistance of 3.2 10-5 W. What is the ... (Read 55 times)

lidoalex

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on: Jul 28, 2018
A 0.10-m long metal rod has a radius of 1.0 cm and a resistance of 3.2  10-5 W. What is the resistivity of the metal?
 a. 5.0  10-8 Wm
  c. 10  10-8 Wm
  b. 160  10-8 Wm
  d. 1.6  10-8 Wm

Question 2

A bus is designed to draw its power from a rotating flywheel that is brought up to its maximum speed (3000 rpm) by an electric motor. The flywheel is a solid cylinder of mass 250 kg and radius 0.500 m (Icylinder = MR2/2). If the bus requires an average power of 10.0 kW, how long will the flywheel rotate?
 a. 154 s
  c. 463 s
  b. 308 s
  d. 617 s


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onowka

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Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

A


lidoalex

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Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

nyrave

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Reply 3 on: Yesterday
Excellent

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