The inert-gas atoms have the group number of ______________.
Fill in the blank(s) with the appropriate word(s).
zero
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Phil leans over the edge of a cliff and throws a rock upward at 5 m/s. Neglecting air resistance, two seconds later the rock's speed is
A) zero. B) 5 m/s. C) 10 m/s. D) 15 m/s. E) none of the above
Successive bright fringes in an interference pattern result from
A) equal-length distances from the slits. B) distance from the slits successively increasing one wavelength at a time. C) destructive interference. D) none of the above
Momentum: A satellite, initially at rest in deep space, separates into two pieces, which move away from each other. One piece has a mass of 190 kg and moves away with a speed 0.280c, and the second piece moves in the opposite direction with a speed 0.600c. What is the mass of the second piece?
A. 88.7 kg B. 79.6 kg C. 73.9 kg D. 68.8 kg E. 52.7 kg
Energy in Inductors: You need an inductor that will store 20 J of energy when a 3.0-A current flows through it. What should be its self-inductance?
A. 4.4 H B. 90 H C. 60 H D. 3.7 H