AP (Advanced Placement) Physics(BC): Questions 516  519 of 920
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Question number: 516
Question
The outside of a room temperature is , and inside of the room temperature is . Assume that the heat is transferred only through a window glass of thermal conductivity . The area of the window is and thickness of glass is . What is the heat transfer rate, through window glass?
Choices
Choice (5)  Response  

a. 


b. 


c. 


d. 


e.  All of the above 

Question number: 517
» Gravitation and Circular Motion
Question
A car of mass is traveling on a level roadway. What is the minimum coefficient of friction required to keep car on a turn with radius of ?
Choices
Choice (5)  Response  

a.  6.6 

b.  3.8 

c.  0.10 

d.  2.4 

e.  Question does not provide sufficient data or is vague 

Question number: 518
» Force and Newton's Law of Motion
Question
A net force of is applied for to an object with a mass of , will change the speed of the object:
Choices
Choice (5)  Response  

a.  From rest to 

b.  From to 

c.  From to 

d.  From to 

e.  All of the above 

Question number: 519
Question
In the Bohr model of the hydrogen atom, the electron is confined to specific energy states. If is the quantum number for a particular energy level, is the electron wavelength associated with that energy level, and is the radius for the specified energy level, then which of the following equations must be correct?
Choices
Choice (5)  Response  

a. 


b. 


c. 


d. 


e.  All of the above 
