A 12.6-V battery supplies a 2.0-A current for 2.0 minutes. What ...

[Diane]

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

[Sierray]

Answer to Question 1

B

Answer to Question 2

C

[Diane]

Thank you!

[Sierray]

Always glad to help...