Food in a pressure cooker is cooked faster due to
A) higher temperature.
B) greater rate of bubble formation in the water.
C) energy transfer in the water.
D) all of the above
E) none of the above
Answer: A
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Series/Parallel Circuits: For the circuit shown in the figure, what is the power dissipated in the 2.0-? resistor? All the numbers shown are accurate to three significant figures.
A. 5.33 W B. 8.00 W C. 6.67 W D. 2.67 W E. 3.56 W
Radioactivity Basics: In beta-minus decay
A. a proton is emitted. B. a neutron is emitted. C. an electron is emitted. D. an electron decays into another particle. E. a proton is transformed into a neutron.
Which of the following are candidates for dark matter?
A) brown dwarfs B) Jupiter-size objects C) WIMPs D) faint red stars E) all of the above
The electric potential of a charge distribution is given by the equation V(x) = 3 x2 y2 + y z3 - 2 z3x, where x, y, z are measured in meters and V is measured in volts
Calculate the magnitude of the electric field vector at the position (x,y,z) = (1.0, 1.0, 1.0). A) 4.3 V/m B) 2.0 V/m C) -8.1 V/m D) 8.6 V/m E) 74 V/m