AP (Advanced Placement) Physics(BC): Questions 453  457 of 921
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Question number: 453
Question
If the half – life of a radioactive isotope is , then what is the decay constant of it?
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Choice (5)  Response  

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e.  None of the above 

Question number: 454
Question
Two particles of charges and , are separated to . How much electrostatic force is acting on particle of charge due to particle of charge ?
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e.  Question does not provide sufficient data or is vague 

Question number: 455
Question
A tall tank has a bottom area of . It is filled to a depth of with fresh water. What is the fluid force on bottom of the tank?
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Choice (5)  Response  

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e.  None of the above 

Question number: 456
Question
A mass of is hung from a metallic wire. The elastic limit of the wire is and Young’s modulus of the wire is . What should be the minimum radius of the wire, so that elastic limit is not exceeded?
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e.  All of the above 

Question number: 457
Question
If the Young’s modulus of a wire is , then how much force is applied to stretch a wire in cross section to of its length?
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Choice (5)  Response  

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d. 


e.  Question does not provide sufficient data or is vague 
