The south pole of a bar magnet is moved toward an aluminum ring, along the axis of the ring. As the magnet approaches, the changing magnetic flux induces an electric current in the ring that, when seen from the bar magnet, corresponds to positive charge carriers flowing
A. alternating with a fixed frequency.
B. alternating with a frequency proportional to a speed of the bar magnet.
C. clockwise.
D. counterclockwise.
Answer: C
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The value of the momentum of a system is the same at a later time as at an earlier time if there are no
a. collisions between particles within the system. b. inelastic collisions between particles within the system. c. changes of momentum of individual particles within the system. d. internal forces acting between particles within the system. e. external forces acting on particles of the system.
Projectile Motion: Shown below are the velocity and acceleration vectors for an object in several different types of motion. In which case is the object slowing down and turning to its right?
A. 
B. 
C. 
D. 
E. 
In terms of axial tilt, which of the jovian planets shows us the largest inclination?
A) Pluto B) Neptune C) Saturn D) Jupiter E) Uranus
A 3.2-L volume of neon gas (Ne) is at a pressure of 3.3 atm and a temperature of 330 K. The atomic mass of neon is 20.2 g/mol,
Avogadro's number is 6.022 × 1023 molecules/mol, and the ideal gas constant is R = 8.314 J/mol • K = 0.0821 L • atm/mol • K. The mass of the neon gas is closest to A) 7.9 × 10-3 kg. B) 4.6 × 10-3 kg. C) 3.8 kg. D) 7.8 kg. E) 7.8 × 102 kg.