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How do you factor x^2-600x+90000? Hi, help with this problem in physics. The de Broglie wavelength of a car is 1.0 * 10^3 kg traveling at 75 km/hr is how many meters? Can the bldc motor works without hall sensors? For example the computers fun motor.? Cu+ZnSO4+temperature=? An excess of BaCl2 is added to 5.00ml of a 0.250M H2SO4 solution. What will be the mass of the resulting precipitate?