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Prentice Hall Conceptual Physics ©2009

 

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Prentice Hall Conceptual Physics FAQ

Looking for answers? This section gives you the answers to the most frequently asked questions from students to the authors. Questions vary from different parts of the country and the authors were gladly able to answer each one of them. Some of those questions that were confusing to you for years have now been answered by the experts.

In the Ping Pong Throw question for Chapter 5, why are weight and air resistance both in the same direction?

On TV, I saw the astronauts accelerate at 3 g's before getting to orbital speed. When do they get to 0 g where they're weightless?

How do you calculate net force?

How does the take-off of a rocket compare to the take-off of a bottle rocket?

How does the space shuttle accelerate, if there is no atmosphere to push off of?

I understand that a rocket pushes the gas (downward) and the gas pushes the rocket (upward). When you say the rocket recoils, does that mean that it moves downward with its small acceleration while at the same time it moves upward with the gases' large acceleration?

In Ch 9, your book says that centripetal force=mv²/r. So centripetal acceleration would be inversely proportional to radius. However, in the discussion of the orbiting space station in your book, it says that doubling the distance from the axis of rotation doubles the centripetal acceleration… i.e. a direct proportion. What am I missing? I love teaching your text and the students love it, too. Please RSVP ASAP. THANKS!!!!

What are the reasons for the high pitch of your voice after breathing helium?

 
 
 
 
 
 
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