PHYS 210 Final, Fall 2014
American University of Beirut · Introductory Physics II · 1 page
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23: The below Figure shows four situations in which a red liquid and a gray liquid are in a U-tube. In one situation the
Meni 2 liquids cannot be in static equilibrium; Which situation is that:
a @ ® “
Choose one answer. O} situation (2) ¥
situation(3) x
situation(1) x
situation(4) x
Correct
Marks for this submission: 3/3.
24 . :
Marks: 3 An object moves in a circle at a constant speed. The work done on the object is zero because
Choose one answer. The displacement is zero in each cycle x
The average force in each revolution is zero x
There is no friction x
The magnitude of the acceleration is constant »
@ The force acting on the object is perpendicular to the velocity y
Correct
Marks for this submission: 3/3.