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Author Question: Two equal positive charges are separated by d. Then one of the charges is replaced by a negative ... (Read 187 times)

audragclark

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on: Jul 28, 2018
Two equal positive charges are separated by d. Then one of the charges is replaced by a negative charge of the same magnitude. Take the potential at infinity to be zero. In which situation is the potential higher midway between the charges; is this value of potential zero?
 a. the first situation; no
  c. the second situation; no
  b. the first situation; yes
  d. the second situation; yes

Question 2

A miniature, spring-loaded, radio-controlled gun is mounted on an air puck. The gun's bullet has a mass of 5.00 g, and the gun and puck have a combined mass of 130 g. With the system initially at rest, the radio-controlled trigger releases the bullet, causing the puck and empty gun to move with a speed of 0.500 m/s. Of the total kinetic energy of the gun-puck-bullet system, what percentage is in the bullet?
 a. 50
  c. 3.4
  b. 96
  d. 100


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vboyd24

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

A

Answer to Question 2

B


audragclark

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Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


vboyd24

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Reply #3 on: Jul 28, 2018
Great! Please up vote :D


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