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i is the unit vector (magnitude of 1) in the direction of the positive x-axis. j is the unit vector in the direction of the positive y-axis. The magnitude of F would be the length of ...
CaCO3 is a carbonate and HCl is an acid, so the products will be a salt, water and Carbon Dioxide.Removing 2 Hydrogen atoms and an Oxygen atom for the H2O, and one carbon atom and 2 ...
Molar Mass of Al2O3 = 27+27+16+16+16 = 102Mass = mol*Mr so mol = Mass/Mrmol = 30/102 = 0.294117... = 0.294 moles
(There is a diagram showing stairs with steps that are 20cm high)Power = Energy/TimeEnergy required to climb one step = Work Done = ForceDistanceForce = Weight = mg = 509.81 = 490.5NEne...
(There is a diagram showing a rectangle with one side labelled x+4 and another labelled x+6)Area = (x+4)(x+6)63m^2 = x2+10x+240 = x2+10x-390 = (x-3)(x+13)x-3=0 so x=3x+13=0 giv...
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