The position of an object that is oscillating on a spring is given by the equation
x = (18.3 cm) cos[(2.35 s-1)t]. What are the (a) frequency, (b) amplitude, and (c) period of this motion?
(a) 0.374 Hz (b) 18.3 cm (c) 2.67 s
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Newton's law of cooling applies to objects undergoing
A) cooling. B) warming. C) both of these D) neither of these
A hockey puck traveling at speed v on essentially frictionless ice collides elastically with one end of a straight stick lying flat on the ice. In this collision
a. momentum is conserved. b. angular momentum is conserved. c. energy is conserved. d. all of the above are conserved. e. only momentum and angular momentum are conserved.
A vertical wire carries a current straight down. To the east of this wire, the magnetic field points
A) toward the north. B) toward the east. C) toward the west. D) toward the south. E) downward.
Mineral sample #4 is ________.
Sphalerite - ZnS Apatite - Ca5(PO4)3(F,Cl,OH) Goethite - ?-FeO(OH)