Which was the only biology experiment on the Viking landers which gave a positive result?
A) Labeled Release
B) Gas Chromatograph/Mass Spectrometer
C) Carbon Assimilation
D) Gas Exchange
A
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Center of Mass: A 30-kg child stands at one end of a floating 20-kg canoe that is 5.0-m long and initially at rest in the water. The child then slowly walks to the other end of the canoe. How far does the canoe move in the water, assuming water friction is negligible?
A. 1.0 m B. 2.0 m C. 3.0 m D. 4.0 m E. 5.0 m
Rapid evaporation of hot water can lead to
A) superheated steam. B) the formation of ice. C) both of these D) neither of these
A particle (charge = 5.0 ?C) is released from rest at a point x = 10 cm. If a 5.0-?C charge is held fixed at the origin, what is the kinetic energy of the particle after it has moved 90 cm?
A. 1.6 J B. 2.0 J C. 2.4 J D. 1.2 J E. 1.8 J
Terminal Voltage and Internal Resistance: When an external resistor of resistance R1 = 14 ? is connected across the terminals of a battery, a current of 6.0 A flows through the resistor. When a different external resistor of resistance R2 = 64.4 ? is connected instead, the current is 2.0 A. Calculate (a) the emf of the battery and (b) the internal resistance of the battery.
Fill in the blank(s) with the appropriate word(s).