Which of the following is not conserved?
a. lepton number
c. baryon number
b. meson number
d. energy
B
You might also like to view...
A coin is 12 cm in front of a convex lens with focal length of magnitude 4.0 cm. Where is the image?
A) 8.0 cm behind the lens B) 6.0 cm in front of the lens C) 6.0 cm behind the lens D) 4.0 cm in front of the lens
A circular coil (radius = 0.40 m) has 160 turns and is in a uniform magnetic field. When the orientation of the coil is varied through all possible positions, the maximum torque on the coil by magnetic forces is 0.16 N × m when the current in the coil is 4.0 mA. What is the magnitude of the magnetic field?
a. 0.37 T b. 1.6 T c. 0.50 T d. 1.2 T e. 2.5 T
Refracting Telescope: To maximize the magnification of a refracting telescope, what lenses should you choose?
A. The objective lens and eyepiece should both have small focal lengths. B. The objective lens and eyepiece should both have large focal lengths. C. The objective lens should have a small focal length and the eyepiece should have a large focal length. D. The objective lens should have a large focal length and the eyepiece should have a small focal length. E. The objective lens should have a large focal length, but it doesn't matter what the focal length of the eyepiece is.
A transverse periodic wave is represented by the equation z(y, t) = 1.50 cm sin(1,250 rad/s t + 10.0
What is the velocity of the wave?
A. 125 m/s in the + z direction B. 250 m/s in the - z direction C. 125 m/s in the + y direction D. 125 m/s in the - y direction E. 250 m/s in the - y direction