The periods of the Cenozoic era are divided into time units called ______________
Fill in the blank(s) with correct word
epochs
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When a chocolate bar is cut in half, its density is
A) halved. B) unchanged. C) doubled.
A capacitor consists of a set of two parallel plates of area A separated by a distance d. This capacitor is connected to a battery that maintains a constant potential difference between the plates
If the separation between the plates is doubled, the magnitude of the charge on the plates will A) double. B) quadruple. C) be cut in half. D) be cut in fourth. E) not change.
A 0.24 kg blob of clay is thrown at a wall with an initial horizontal velocity of If the clay comes to a stop in what is the average horizontal force exerted on the clay by the wall?
A) 42 N B) 26 N C) 35 N D) 51 N
A far-sighted student has a near point of 1.0 m. Calculate the focal length (in cm) of the glasses needed so the near point will be normal (25 cm)
a. 72 b. 25 c. 33 d. 100 e. ?33