A barge with vertical sides is 10 m wide and 60 m long and is floating in fresh water of density 1000 kg/m3. How much deeper into the water does the barge sink when 3.0 x 105 kg of coal are loaded on the barge?
A) 25 cm
B) 50 cm
C) 75 cm
D) 1.0 m
E) 1.5 m
B
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The only force acting on a 1.6-kg body as it moves along the x axis is given in the figure. If the velocity of the body at x = 2.0 m is 5.0 m/s, what is its kinetic energy at x = 5.0 m?
a.
52 J
b.
44 J
c.
36 J
d.
60 J
e.
25 J
A plane is moving due north, directly towards its destination. Its airspeed is 200 mph. A constant breeze is blowing from west to east at 42 mph. In which direction is the plane pointed?
a. 5.7° W of N b. 12° W of N c. 22° W of N d. 11° E of N
The Bohr model of the hydrogen atom predicts an ionization energy of 13.6 eV. With this model one would expect the ionization energy of the Li++ ion to be
A) 122.4 eV B) 40.8 eV C) 54.4 eV D) 27.2 eV E) 79.6 eV
An 8.00 kg object has a moment of inertia of 1.50 kg 
If a torque of 2.00 N•m is applied to the object, the angular acceleration is
A. 0.750 
B. 1.00
C. 1.33
D. 2.01
E. 2.67