A non-uniform, 80-g, meter stick balances when the support is placed at the 51.0-cm mark. At what location on the stick should a 5.0-g tack be placed so that the stick will balance at the 50.0 cm mark?
A)
16.0 cm
B)
67.0 cm
C)
66.0 cm
D)
35.0 cm
E)
34.0 cm
E
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A 5.00 gram bullet has a velocity of 300 m/s. It strikes a block of wood and penetrates to a distance of 2.00 cm. The average force of the block of wood on the bullet is
A. 9,340 N. B. 11,250 N. C. 15,200 N. D. 19,500 N. E. 21,400 N.
Compared with falling on a wooden floor, a wine glass may not break when it falls on a carpeted floor because of
A) lesser impulse in stopping. B) longer time to stop. C) both of these D) none of the above
A 5.00-kg box slides 4.00 m across the floor before coming to rest. What is the coefficient of kinetic friction between the floor and the box if the box had an initial speed of 3.00 m/s?
A) 1.13 B) 0.587 C) 0.115 D) 0.229 E) 0.267
Steven Weinberg, Abdus Salam, and Sheldon Glashow shared the 1979 Nobel Prize in physics for their development of __________
Fill in the blank(s) with correct word