An object with mass m and moment of inertia I is spinning with an angular momentum L. Its kinetic energy is:
a. 0.5I2/L.
c. 0.5L2/m.
b. 0.5L2/I.
d. 0.5I2/m.
B
You might also like to view...
A sealed cylinder fitted with a movable piston contains ideal gas at 27°C, pressure 0.500 × 105 Pa, and volume 1.25 m3. What will be the final temperature if the gas is compressed to 0.800 m3 and the pressure rises to 0.820 × 105 Pa?
A) 42°C B) 68°C C) 130°C D) 250°C E) 150°C
The mean life (time constant) of radon-222 is 5.526 d. If a sample of radon initially contains 6.00 × 108 radon atoms, how many of them are left after 10.0 d?
A) 9.82 × 107 B) 7.67 × 107 C) 8.34 × 108 D) 7.29 × 108 E) 8.56 × 108
A 4.00 kg ball is moving at 4.00 m/s to the EAST and a 6.00 kg ball is moving at 3.00 m/s to the NORTH. The total momentum of the system is
A. 14.2 kg m/s at an angle of 48.4 degrees SOUTH of EAST. B. 48.2 kg m/s at an angle of 24.2 degrees SOUTH of EAST. C. 48.2 kg m/s at an angle of 48.4 degrees NORTH of EAST. D. 24.1 kg m/s at an angle of 24.2 degrees SOUTH of EAST. E. 24.1 kg m/s at an angles of 48.4 degrees NORTH of EAST.
A deuteron, with the same charge but twice the mass of a proton, moves with a speed of 6.0 × 10^5 m/s perpendicular to a uniform magnetic field of 0.20 T. Which of the paths described below would it follow? (qp = 1.6 × 10^-19 C and md = 3.34 × 10^-27 kg)
a. a circular path of 6.3-cm radius c. a circular path of 3.1-cm radius b. a circular path of 1.6-cm radius d. a straight line path