The disk of the Milky Way is approximately 20,000 ly in diameter
Indicate whether the statement is true or false
F
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The ______________in a composite material is continuous.
Fill in the blank(s) with the appropriate word(s).
Caloris is well named, for at every perihelion, it faces the Sun directly
Indicate whether the statement is true or false
A stream of electrons passes through a velocity filter where the crossed magnetic and electric fields are 0.020 T and 5.00 × 10^4 V/m, respectively. Find the kinetic energy (in electron volts) of the electrons passing through the filter. [1 eV = 1.60 × 10^?19 J]
Three identical bar magnets, each 2 cm long, are placed in a straight line on a frictionless surface with their ends equally spaced with 2 cm between ends. They are constrained so they cannot rotate, but they can slide along the straight line. The left magnet has its north pole nearest the north pole of the middle magnet, and the right magnet has its south pole toward the middle magnet's south
pole. Once they are in place and released from rest, which of the following best describes the motion of the magnets? a. The end magnets will move away from the center magnet. b. The magnets will not move since they are equally spaced. c. The magnets will snap together. d. None of the above would happen.