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Concept questions (discussed in class). A hydrogen atom is composed of a nucleus containing a single proton, about which a single electron orbits. The.

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Presentation on theme: "Concept questions (discussed in class). A hydrogen atom is composed of a nucleus containing a single proton, about which a single electron orbits. The."— Presentation transcript:

1 Concept questions (discussed in class)

2 A hydrogen atom is composed of a nucleus containing a single proton, about which a single electron orbits. The electric force between the two particles is 2.3 x 10 39 greater than the gravitational force! If we can adjust the distance between the two particles, can we find a separation at which the electric and gravitational forces are equal? 1. Yes, we must move the particles farther apart. 2. Yes, we must move the particles closer together. 3. No, at any distance CONCEPT QUESTION:

3 Two uniformly charged spheres are firmly fastened to and electrically insulated from frictionless pucks on an air table. The charge on sphere 2 is three times the charge on sphere 1. Which force diagram correctly shows the magnitude and direction of the electrostatic forces:

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