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Author Question: A 3.00-m-long ladder, weighing 200 N, rests against a smooth vertical wall with its base on a ... (Read 275 times)

mcmcdaniel

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on: Jul 29, 2018
A 3.00-m-long ladder, weighing 200 N, rests against a smooth vertical wall with its base on a horizontal rough floor, a distance of 1.00 m away from the wall.
 
  If the center of mass of the ladder is 1.20 m from its base, what frictional force must the floor exert on the base of the ladder in order for the ladder to be in static equilibrium?
  A) 93.3 N
  B) 130 N
  C) 28.3 N
  D) 102 N
  E) 150 N

Question 2

For the ground state of the hydrogen atom, which of the following represents the correct value of the magnetic quantum number?
 
  A) -1
  B) 0
  C) 1
  D) 2
  E) -2


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macagn

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Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

B


mcmcdaniel

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Reply 2 on: Jul 29, 2018
Wow, this really help

ryhom

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Reply 3 on: Yesterday
Excellent

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