The principle that states that the exact position and the velocity of an object can never be known simultaneously is called ______________ principle.
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[Ques. 2] A current-carrying 2.0-cm long segment of wire is inside a long solenoid (radius = 4.0 cm, n = 800 turns/m, current = 50 mA). The wire segment is oriented perpendicularly to the axis of the solenoid. If the current in the wire segment is 12 A, what is the magnitude of the magnetic force on this segment?
a. 22 N
b. 16 N
c. 18 N
d. 12 N
e. 0 N
[Ques. 3] A(n) ______________ is equivalent to 3.26 light-years.
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[Ques. 4] In the Bohr model, the higher the value of n, the farther from the nucleus the electron is located. In the quantum model, the higher the value of n, the farther from the nucleus the electron ______________ is located.
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[Ques. 5] A long solenoid (diameter = 5.0 cm) is wound with 960 turns per meter of thin wire through which a current of 300 mA is maintained. A wire carrying 12 A is inserted along the axis of the solenoid. What is the magnitude of the magnetic field at a point 2.0 cm from the axis?
a. 0.41 mT
b. 0.48 mT
c. 0.38 mT
d. 0.56 mT
e. 0.24 mT
[Ques. 6] The Sun remains stable because the inward pull of ______________ balances the outward push from nuclear fusion.
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[Ques. 7] The most modern model of the atom is known as the ______________ model.
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[Ques. 8] A solenoid 4.0 cm in radius and 4.0 m in length has 8 000 uniformly spaced turns and carries a current of 5.0 A. Consider a plane circular surface (radius = 2.0 cm) located at the center of the solenoid with its axis coincident with the axis of the solenoid. What is the magnetic flux through this surface? (1 Wb = 1 T m2)
a. 63 Wb
b. 16 Wb
c. 0.25 mWb
d. 10 Wb
e. 5.0 Wb
[Ques. 9] The ______________ is the remnant of a supernova explosion observed in A.D. 1054.
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[Ques. 10] The term probability is associated with the model of the atom proposed by ______________.
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