A barge is 10.0 m wide and 60.0 m long and has vertical sides. It is floating in fresh water. A load of 6.00 MN is placed on the barge. How much does its hull sink into the water?
A)
5.00 m
B)
7.21 m
C)
10.2 cm
D)
10.0 m
E)
1.02 m
E
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Which of the following layers of the Earth is unique among the terrestrial planets?
A) hydrosphere B) ionosphere C) mantle D) crust E) core
A single brick falls with acceleration g. The reason a double brick falls with the same acceleration is
A) that in free fall all accelerations are g. B) its ratio of force to mass is the same. C) an experimental fact tested many times. D) none of the above
In a police rifle test, a 15-g bullet traveling 213 m/s in a vertical direction suddenly buries itself in a 2.4-kg block of wood at rest directly above it. As a result, the bullet-block combination moves vertically upward
(a) Determine the velocity of the bullet-block combination just after the impact. (b) Determine the maximum height reached by the bullet/block combination. (c) Is kinetic energy conserved in this collision?
Intensity: What is the maximum value of the magnetic field at a distance of 2.5 m from a light bulb that radiates 100 W of single-frequency sinusoidal electromagnetic waves uniformly in all directions? (?0 = 8.85 × 10-12 C2/N ? m2, ?0 = 4? × 10-7 T ?· m/A, c = 3.0 × 108 m/s)
A. 0.10 ?T B. 0.40 ?T C. 0.50 ?T D. 0.60 ?T E. 0.80 ?T