a.
Which of the following is an example of an electric force acting at a distance?
a.
pam applies a force to the head of a nail by pounding it with a heavy, iron hammer. the nail then wedges itself between the fibers of a wooden board.
b.
pam jumps out of an airplane. air rushes past her body a very high speeds as she falls. she then opens her parachute and feels an upward force.
c.
pam rubs a glass rod with wool, then moves the rod over a pile of small paper scraps. the scraps leap into the air and stick to the rod.
d.
pam applies a twisting force to the steering wheel of her car. this force pushes on tubes filled with fluid, which then push the wheels of her car to one side.
Answers: 1
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Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.
Answers: 1
Which of the following is an example of an electric force acting at a distance?
a.
a.
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