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Science Clinic => Physics => Topic started by: misspop on Jul 28, 2018

Title: A particle (charge = +40 mC) is located on the x axis at the point x = -20 cm, and a second particle ...
Post by: misspop on Jul 28, 2018

A particle (charge = +40 mC) is located on the x axis at the point x = -20 cm, and a second particle (charge = -50 mC) is placed on the x axis at x = +30 cm. What is the magnitude of the total electrostatic force on a third particle (charge = -4.0 mC) placed at the origin (x = 0)?
 a. 41 N
  b. 16 N
  c. 56 N
  d. 35 N
  e. 72 N

Question 2

Each of two small non-conducting spheres is charged positively, the combined charge being 40 mC. When the two spheres are 50 cm apart, each sphere is repelled from the other by a force of magnitude 2.0 N. Determine the magnitude of the smaller of the two charges.
 a. 1.4 mC
  b. 1.1 mC
  c. 2.0 mC
  d. 3.3 mC
  e. 17 mC

Title: A particle (charge = +40 mC) is located on the x axis at the point x = -20 cm, and a second particle ...
Post by: matt on Jul 28, 2018

Answer to Question 1

C

Answer to Question 2

A