RNA catalysts in cells are referred to as
A) enzymes
B) ribozymes
C) ribosomes
D) chemzymes
B
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The magnetic field of a plane-polarized electromagnetic wave moving in the z-direction is given by 
in SI units. What is the maximum E field?
A. 1000 V/m B. 180 V/m C. 81 V/m D. 360 V/m E. 0.40 V/m
Charge of a uniform density (8.0 nC/m2) is distributed over the entire xy plane. A charge of uniform density (5.0 nC/m2) is distributed over the parallel plane defined by z = 2.0 m. Determine the magnitude of the electric field for any point with z = 1.0 m
a. 0.45 kN/C b. 0.17 kN/C c. 0.28 kN/C d. 0.73 kN/C e. 0.62 kN/C
Microfossils are
A) fossilized microbes B) the remains of very small dinosaurs C) the remains of the very first multicellular organisms D) the remains of the tiny organisms which were first to colonize onto land
A space station out beyond the solar system is rotating with constant angular velocity. A spaceship heading into the station along a diameter of the station, uses its rockets to brake, and then docks inside the station at its center. When the spaceship docks, the angular momentum of the system consisting of the station and ship
a. is less than the original angular momentum of the station. b. is the same as the original angular momentum of the station. c. is greater than the original angular momentum of the station. d. is less than the original angular momentum of the station, but the angular velocity increases. e. is greater than the original angular momentum of the station, but the angular velocity decreases.