PHYS 210 Final, Spring 2008

T A stone of mass 7.0 Kg is subject to a variable one-dimensional force given by: Cle: F(x)=6.0 N — (2.0 N/m) x + (6 Nim2 ) x2 The rock starts from rest at the origin (x=0). What is the speed after the block has moved a distance of 9.0 m?. (no friction is considered). (Your answer is in m/s and 2 figures after the point, like 20.31, no units with the answer) Answer: 20.22 Correct Marks for this submission: 4/4 8 An organ pipe open at both ends has a radius of 4.0 cm and a length of 6.0 m. What is the frequency of the third bia harmonics assuming the speed of sound to be 344 m/s? Choose one answer. @ a. 86Hz ¥ b.172Hz x c. 264Hz x d.440Hz x e. 140 Hz x Correct Marks for this submission: 4/4