Which of the following is not a SI base unit?
A. kelvin
B. kilogram
C. newton
D. second
E. meter
C. newton
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The rapid change of an electric field induces
A) a stronger electric field. B) a magnetic field. C) both of these D) none of the above
Upon entering a medium in which the speed of light is 1.5 × 10^8 m/s from a medium in which the speed of light is 2 × 10^8 m/s, an oblique light ray will be _____________ the normal to the interface between the two media
a. bent away from c. travel along b. bent toward d. remain undeviated with respect to
Blood as it enters the lungs has a high concentration of carbon dioxide and a low concentration of oxygen. The blood leaves the lungs with a high concentration of oxygen and a low concentration of carbon dioxide. What are the qualitative concentration gradients of CO2 and O2 in the lungs?
What will be an ideal response?
Regarding the charges of the electron, proton and neutron:
A) these objects are charged only when they reside in an ionized atom; otherwise, all three are uncharged. B) the proton has a positive charge, the electron has a much smaller negative charge, and the neutron has no charge. C) the proton has a positive charge, the neutron has a negative charge whose strength is equal to that of the proton's charge, and the electron has no charge. D) the electron has a negative charge, the proton has a positive charge, and the neutron has a charge that can be positive or negative or zero depending on the ionization of the atom in which it resides. E) the proton has a positive charge, the electron has a negative charge whose strength is equal to the strength of the proton's charge, and the neutron has no charge.