Suppose the x-position of an oscillating object is given by
. What is the object’s speed at time t = 0?
A. A
B. Zero
C.
D.
E.
F. Something else (specify)
T. We are not given enough information to answer.
E.
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A 100-N little physics tyke hangs on the ends of a rope suspended over a pulley as shown. The tension in the rope is
1) 0 N. 2) 50 N. 3) 100 N. 4) 200 N. It is interesting to note that 5) the tension in the rope at its midpoint (uppermost part) is 100 N. 6) this is a modified tug-o'-war example (simply draped over a pulley). 7) the net force acting on the rope is in this case identical to the child's weight.
A lab specimen is 15.2 mm from a convex lens. The image is 4.0 mm tall and 9.0 cm from the lens. How tall is the specimen?
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