An object is made up of three masses connected by massless rods of fixed length.
Mass A is located at (30.0 cm, 0 cm) and has a mass of 250 grams, mass B is located at (0 cm, 30.0 cm) and has a mass of 350 grams, mass C is located at (-30.0 cm, 0 cm) and has a mass of 450 grams. What is the moment of inertia of this object about an axis perpendicular to the x-y plane and passing through the origin?
A) 0.0945 kg m2
B) 0.315 kg m2
C) 0.185 kg m2
D) 0.0135 kg m2
E) 0.0450 kg m2
Question 2
Which one of the following is a correct statement for a number of resistors connected in series or parallel?
A) The total resistance in a series circuit decreases as more resistors are added.
B) The flow of current is different through resistors connected in a series circuit.
C) The voltage is different across resistors connected in a parallel circuit.
D) The total resistance in a parallel circuit decreases as more resistors are added.
E) None of the above statements is correct.
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