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Midterm1Solution

# Midterm1Solution - PHYSICS 9B MIDTERM 1 I certify by my...

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PHYSICS 9B MIDTERM 1 October 28, 2010 I certify by my signature below that I will abide by the UC Davis Code of Academic Conduct. This includes not copying from anyone else’s exam not letting any other student copy from my exam not discussing this exam with any student who has not yet taken it, nor providing any information, written or oral, that might get to a student who has not yet taken it. Anyone suspected of cheating will be automatically reported to Student Judicial Affairs. LAST NAME: FIRST NAME: STUDENT ID: (P R I N T) (P R I N T) (LAST 4 DIGITS) Signature: Problem 1. (2 points) What happens with the scale reading after you immerse an object into the water? A. Scale reading will increase by the value of the buoyant force. B. Scale reading will decrease by the value of the buoyant force. C. Scale reading will remain constant. D. Scale reading will increase by the weight of the object. E. Scale reading will decrease by the weight of the object. Solution: Scale reading will increase by the value of buoyant force. When we immerse the block into the water, there is a buoyant force from the water to the block. Accordingly, when two bodies interact, there is an equal downward force from the block acting on the water. Problem 2 (2 points). When you pluck a guitar string the wave produced can be described as

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Midterm1Solution - PHYSICS 9B MIDTERM 1 I certify by my...

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