The velocity of an object as a function of time is given by v(t) = -3.0 m/s - (2.0 m/s2 ) t + (1.0 m/s3 ) t2. Determine the instantaneous acceleration at time t = 2.00 s
A)
-5.0 m/s2
B)
2.0 m/s2
C)
-18 m/s2
D)
-3.0 m/s2
E)
18 m/s2
B
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A. 770 cm3 B. 260 cm3 C. 520 cm3 D. 400 cm3
Control rods are used in nuclear reactors
A. to produce more neutrons B. to add more fuel C. to produce more protons D. to absorb neutrons
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A) Sam B) Molly C) They both would measure the same age.
The relative humidity is 100% when
a. the psychrometer wet-bulb temperature is depressed. b. the actual moisture content is equal to the maximum moisture capacity. c. the air temperature is above the dew point temperature. d. the air temperature is 100°F.