What is the primary advantage of magnesium alloys?
(a) High corrosion resistance
(b) High strength
(c) Low density
(d) High ductility
(c) Low density
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Snell's Law: Light enters air from water. The angle of refraction will be
A. greater than the angle of incidence. B. equal to the angle of incidence. C. less than the angle of incidence.
In all three types of radioactive decay, what value is conserved in addition to electric charge, energy, and momentum?
A) atomic number B) neutron number C) neutron number D) nucleon number E) none of the given answers
A lobster crawls onto a bathroom scale on the ocean floor. Its weight compared to its weight above the surface is
A) greater. B) less. C) the same.
Two long parallel wires carry currents of 10. A in opposite directions. They are separated by 40. cm. What is the magnetic field in the plane of the wires at a point that is 20. cm from one wire and 60. cm from the other?
What will be an ideal response?