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A useful model of a water molecule is sketched in the figure below, with point charges of 5.2 10-20 C at the H sites and a point charge -10.4 x 10-20 C at the O site. The H-O bond length is 9.6 10-11 m, and the bond angle is theta = 104°.
The diagram is simply Oxygen with two H with theta angle drawn between Hydrogens.
a. What is the total electric potential energy of this model of a water molecule?
b. How much work would be required to completely disassociate the molecule?
A ball of mass 522 g starts at rest and slides down a frictionless track. It leaves the track horizontally, striking the ground a distance of 1 m from the end of the track after falling the vertical distance 1.25 m from the end of the track.
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Velocity and time for the moving particle.
A spotlight is coated so that it won't transmit magenta light from its white-hot filament. What colour emerges from coated spotlight.
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A merry-go-round starts from rest and accelerates uniformly over 23.5 s to the final angular velocity of 6.55 rev/min.
Nobel laureate Richard Feynman (1918-1988) once said that if two persons stood at arm's length from each other and each person had 1% more electrons than protons, the force of repulsion between them would be enough to lift a "weight" equal to that..
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