According to present theories, there is a neutrino for all the following particles except
a. the neutral pion.
b. the electron.
c. the muon.
d. the tau lepton.
a
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A mass is suspended vertically from a spring so it is at rest at the equilibrium position. The mass is pulled straight down to an extension x and released so that it oscillates about the equilibrium position. The speed of the mass is greatest when the mass is
A. at its maximum upward travel. B. at the equilibrium point. C. at its maximum lower travel. D. somewhere between the equilibrium point and maximum extension.
Where is probably the best place to find life on Mars today?
A) inside craters that used to be filled with water B) in the Mariner Valley C) in the residual polar caps D) in geologically active areas like Tharsis where subsurface water may exist
Most pulsars have a measured mass of
A) about 1.4 solar masses. B) 5.2 solar masses. C) greater than 10 solar masses. D) less than 1.0 solar masses. E) between 2 and 4 solar masses.
A point on the rim of a 0.15-m-radius rotating disk has a centripetal acceleration of 5.0 m/s2 . What is the angular speed of a point 0.075 m from the center of the disk?
a. 0.89 rad/s b. 1.6 rad/s c. 3.2 rad/s d. 5.8 rad/s