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Correct Answer: B) 3.8.
Correct Answer: A) Newton.
Correct Answer: A) Nothing can be done to change the value of k; it is a constant.
Correct Answer: C) Digitial.
Correct Answer: A) Jet plane.
Correct Answer: A) Viscous Force.
Correct Answer: A) Measurement.
Correct Answer: B) Horizontal and vertical motion.
Correct Answer: B) Gravitational Force.
Correct Answer: A) A will have a higher pitch than B.
Correct Answer: A) An electric and a magnetic component.
Correct Answer: C) 50 m, North.
Correct Answer: A) - 40$^ \circ$Celsius.
Correct Answer: A) Vf2 = Vi2 + 2as.
Correct Answer: A) Control current flow.
Correct Answer: C) Vavg = (rfinal-rinitial)/(tfinal-tinitial).
Correct Answer: C) Distance.
Correct Answer: C) Total internal reflection.
Correct Answer: B) C does not depend on the charge on the plates.
Correct Answer: C) Circuit in Parallel.
Correct Answer: C) 4.4.
Correct Answer: D) 105 m/s.
Correct Answer: D) Area.
Correct Answer: B) Scalar quantity.
Correct Answer: B) Elements, Compounds, Mixtures.