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Author Question: A 12.6-V battery supplies a 2.0-A current for 2.0 minutes. What is the work done by the battery ... (Read 88 times)

Diane

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on: Jul 28, 2018
A 12.6-V battery supplies a 2.0-A current for 2.0 minutes. What is the work done by the battery during this process?
 a. 0 J
  c. 2.5  102 J
  b. 3.0  103 J
  d. 1.5  104 J

Question 2

A baseball pitcher loosens up his pitching arm. He tosses a 0.15-kg ball using only the rotation of his forearm, 0.32 m in length, to accelerate the ball. If the ball starts at rest and is released with a speed of 24 m/s in a time of 0.40 s, what torque is applied to the ball while being held by the pitcher's hand to produce the angular acceleration?
 a. 1.1 Nm
  c. 2.9 Nm
  b. 11 Nm
  d. 1.4 Nm


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Sierray

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

B

Answer to Question 2

C


Diane

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Reply #2 on: Jul 28, 2018
Thank you!


Sierray

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Reply #3 on: Jul 28, 2018
Always glad to help...


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