Three horses are side-by-side on a merry-go-round: one at the edge, one near the axis, and one in between. Each horse has the same angular speed. Which horse has the greatest linear speed?
A. The horse nearest the axis
B. The horse in the middle
C. The horse at the edge
D. The linear speed is the same for all three horses
Answer: C
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Which of the following is a result of particles of antimatter colliding with particles of normal matter?
A) The formation of a large particle of normal matter B) The conversion of the mass of the particles into energy C) The formation of a large particle of antimatter D) The creation of new, more massive particles
If two or more sources of light are to show interference patterns, they must be coherent
Indicate whether the statement is true or false
A point charge of 6.0 nC is placed at the center of a hollow spherical conductor (inner radius = 1.0 cm, outer radius = 2.0 cm) which has a net charge of ?4.0 nC. Determine the resulting charge density on the inner surface of the conducting sphere.
A. +4.8 ?C/m2 B. ?4.8 ?C/m2 C. ?9.5 ?C/m2 D. +9.5 ?C/m2 E. ?8.0 ?C/m2
The pregalactic blobs started with masses comparable to big globular clusters
Indicate whether the statement is true or false