Physics 103 Exam 3 November 25, 2003
Name__________________________________________ ID #____________________
Section #______________ TA Name_________________________________________
Fill in your name, student ID # (not your social security #), and section # (under ABC of
special codes) on the Scantron sheet. Fill in the letters given for the first 5 questions on
the Scantron sheet. These letters determine which version of the test you took, and it is
very important to get this right. Make sure your exam has questions 6–25.
1. A
2. E
3. D
4. C
5. B
6. A 1.5m long wire with a cross sectional area of 1.5mm2 is attached to the ceiling. It is
stretched 2.0mm when a 15 kg mass is hung from its free end. What is the value of
Young’s modulus for this wire?
a. 3.35x104 N/m2
b. 1.26x1010 N/m2
c. 5.92x107 N/m2
d. 2.65x1019 N/m2
e. 7.35x1010 N/m2
