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Two bowling balls with a positive charge of 2.5 x 10-5 C,

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-Two bowling balls with a positive charge of 2.5 x 10-5 C,
are located 26.0 cm apart. The size of the electric force between them is ___ N.
-A solution has a hydroxide-ion concentration of 1.0 x 10^-7 mol per liter. what is the pH of this solution?
-How many grams of ammonia are produced when 24.00 g of H2. Ammonia chemical equation: [3 H2 + N2 –> 2 NH3
-A 2200 kg car is moving at a speed of 24.0 m/s. Determine the stopping distance (in meters) if the brakes supply a force of 3500 N.
-A 54 Newton horizontal force pushes a 5.0 kg mass sitting on a horizontal surface. Additionally, the horizontal surface exerts a 30 newton frictional force on the mass. What is the acceleration of the mass?

 
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