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Author Question: A celebrating student throws a water balloon horizontally from a dormitory window that is 50 m above ... (Read 55 times)

Mr.Thesaxman

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on: Jul 29, 2018
A celebrating student throws a water balloon horizontally from a dormitory window that is 50 m above the ground. It hits the ground at a point 60 m from the building without appreciable air resistance.
 
  (a) What will be the horizontal component of the velocity of the balloon just before it hits the ground? (b) What will be the magnitude of the vertical velocity of the balloon just before it hits the ground?

Question 2

A certain 20-A circuit breaker trips when the current in it equals 20 A. What is the maximum number of 100-W light bulbs you can connect in parallel in an ideal 120-V dc circuit without tripping this circuit breaker?
 
  A) 27 B) 11 C) 17 D) 23


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okolip

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

(a) 19 m/s (b) 31 m/s

Answer to Question 2

D


Mr.Thesaxman

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Reply #2 on: Jul 29, 2018
Thank you!


okolip

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Reply #3 on: Jul 29, 2018
Always glad to help...


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