Q1. A charge of -1.5 × 10-9 C is at the origin and a charge of 9.1 × 10-9 C is on the x-axis at x = 3 m. At what location on x-axis is the electric field zero?

Q2. A hotel elevator ascends 170 {rm m} with a maximum speed of 5.90 {rm m/s}. Its acceleration and deceleration both have the magnitude of 1.3 {rm m/s^2}.

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At what location on x-axis is the electric field zero : A hotel elevator ascends 170 {rm m} with a maximum speed of 5.90 {rm m/s}. Its acceleration and deceleration both have the magnitude of 1.3 {rm m/s^2}. |

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## The new rotation period of the sunAssume that the sun runs out of nuclear fuel & suddently collapses to form a white dwarf star, with a diameter equal to that of the Earth. Estimate the new rotation period of the Sun. |

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