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Author Question: A student uses a plumb bob to verify that the doorjamb in a car is vertical. As the car pulls away ... (Read 95 times)

Themember4

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on: Jul 29, 2018
A student uses a plumb bob to verify that the doorjamb in a car is vertical. As the car pulls away from a stop, the student observes that the string now makes an angle  with the doorjamb. What is the acceleration of the car?
 
  A) g sin
  B) g cos
  C) g tan
  D) g
  E)

Question 2

Air is flowing through a rocket nozzle. Inside the rocket the air has a density of 5.25 kg/m3 and a speed of 1.20 m/s. The interior diameter of the rocket is 15.0 cm. At the nozzle exit, the diameter is 2.50 cm and the density is 1.29 kg/m3.
 
  What is the speed of the air when it leaves the nozzle? A) 176 m/s
  B) 29.3 m/s
  C) 88.0 m/s
  D) 35.2 m/s
  E) 343 m/s


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welcom1000

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

C

Answer to Question 2

A


Themember4

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Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

sultansheikh

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Reply 3 on: Yesterday
Gracias!

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