A cubical gaussian surface surrounds a long, straight, charged filament that passes perpendicularly through two opposite faces. No other charges are nearby. Through how many of the cube’s faces is the electric flux zero?
1.0
2.2
3.4
4.6
2
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An object attached to one end of a string moves in a circle at constant speed. Which of the following is correct?
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A car enters a level, unbanked semi-circular hairpin turn of 100-m radius at a speed of 28 m/s. The coefficient of friction between the tires and the road is ? = 0.800. If the car maintains a constant speed of 28 m/s, it will
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