A soda straw is stuck into water at an angle of 36° to the vertical. Looking straight down, what does the angle of the submerged portion of the straw to the vertical appear to be?
What will be an ideal response?
44°
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Two masses are being pulled up a 30.0 degrees incline by a force F parallel to the incline. The acceleration down the incline is 1.00 
and the velocity is up the incline. The force is applied to a 200 kg mass and a string connects the 200 kg mass to a 150 kg mass. The coefficient of kinetic friction is 0.200. The tension in the string is
A. 840 N. B. 980 N. C. 1,140 N. D. 1,530 N. E. 2,660 N.
A uniform rod is 2.0 m long. The rod is pivoted about a horizontal, frictionless pin through one end. The rod is released from rest at the horizontal position. What is the angular acceleration of the rod at the instant the rod makes an angle of 70° with the horizontal?
a. 3.7 rad/s2 b. 1.3 rad/s2 c. 2.5 rad/s2 d. 4.9 rad/s2 e. 1.9 rad/s2
The natural frequencies for a stretched string of length L, and wave speed v, are Nv/(2L) where N equals
A) 0, 1, 2, 3, ... B) 2, 4, 6, 8, ... C) 1, 2, 3, 4, ... D) 0, 1, 3, 5, ... E) 1, 3, 4, 5, ...
A long straight wire (diameter = 2.0 mm) carries a current of 40 A. What is the magnitude of the magnetic field 1.5 mm from the axis of the wire?
a. 3.0 mT b. 12 mT c. 5.3 mT d. 7.4 mT e. 8.0 mT