Which is the largest distance?
A) The distance from the Sun to the center of the Galaxy.
B) The radius of an elliptical galaxy.
C) The thickness of the disk of the Andromeda galaxy.
D) The thickness of the disk of the Milky Way.
E) The distance from Earth to the Virgo cluster of galaxies.
Ans: E) The distance from Earth to the Virgo cluster of galaxies.
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A 60.0-kg mass person wishes to push a 120-kg mass box across a level floor
The coefficient of static friction between the person's shoes and the floor is 0.700. What is the maximum coefficient of static friction between the box and the floor such that the person can push horizontally on the box and cause it to start moving? A) 0.333 B) 0.500 C) 0.350 D) 0.667 E) 0.700
The path of a charged particle moving parallel to a uniform magnetic field will be a
a. straight line. b. circle. c. ellipse. d. parabola.
Which of the following is (are) conserved in an isolated system?
1.the kinetic energy alone 2.the potential energy alone 3.both the potential energy and the kinetic energy 4.the sum of the kinetic energy and the potential energy
Where is the sun located relative to a planet's orbit about it?
a. at the center of the orbit, which is a circle b. at the center of the orbit, which is an ellipse c. at one focus of the ellipse which forms the orbit d. none of the above