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Author Question: A golf ball hits a wall and bounces back at 3/4 the original speed. What part of the original ... (Read 111 times)

Charlie

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on: Jul 28, 2018
A golf ball hits a wall and bounces back at 3/4 the original speed. What part of the original kinetic energy of the ball did it lose in the collision?
 a. 1/4
  c. 7/16
  b. 3/8
  d. 9/16

Question 2

In an isovolumetric process where the pressure increases, are the heat absorbed, work done by the system, and the change in internal energy of the system positive, negative, or zero?
 a. Q is +, W is +, and DU is +.
  c. Q is +, W is 0, and DU is +.
  b. Q is +, W is , and DU is 0.
  d. Q is , W is 0, and DU is .


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ong527

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

C

Answer to Question 2

C


Charlie

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

diana chang

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Reply 3 on: Yesterday
Excellent

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