In a simple model of the hydrogen atom, the electron moves in a circular orbit of radius rB around a stationary proton. 0.053 nm (a) Ignoring the gravitational attraction between the electron and the proton, how many revolutions per second does the electron make? (b) Which force is larger, the electric force the proton exerts on the electron or the gravitational force the proton exerts on the electron? By how much?

A hydrogen atom contains a single electron that moves in a circular orbit about a single proton. Assume the proton is stationary, and the electron has a speed of 7.6  105 m/s. Find the radius between the stationary proton and the electron orbit within the hydrogen atom.

Using conservation of energy In two experiments, Objects A and B, which have like electric charges, are set near each other. Each has a mass of 1.0 kg. Object A is then held in place, while B is allowed to accelerate away under the influence of the strong repulsive electric force between the objects: Experiment #1: +2 A V= Experiment #2: +2 +1 A B +1 B Explanation +1->> In Experiment #1 Object B eventually reaches a velocity of 2.5 m/s. Calculate the velocity Object B eventually reaches in Experiment #2. You may assume there is no friction of any kind on B. Round your answer to 2 significant digits, and be sure it contains an appropriate unit symbol. Check JANC F2 80 F3 0.0 X F4 ential energy Notice that in Experiment #2 Object B starts off closer to Object A. The gray grid is not part of the experiments, it's just drawn to help you measure the distance between the objects. 3 00 F 0² S F5 MacBook Air F6 F7 DII F8 © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy…

A positron has the charge and mass of an electron except that the charge is positive. A positron that is initially at rest at a distance of 2.0 nm away from a stationary carbon nucleus is then allowed to move freely. What will be the speed of the positron when it is infinitely far away from the carbon nucleus? Since the carbon nucleus is much more massive than the positron, it remains at rest. The mass and charge of a positron are m = 9.11 x 10-31 kg and e = 1.602 x 10-19 C, respectively, while the charge of a carbon nucleus is 6e.   a. 3.0 x 106 m/s  b. 2.4 x 106 m/s  c. 1.8 x 106 m/s  d. 3.6 x 106 m/s  e. 1.2 x 106 m/s

Multiple-Concept Example 3 provides some pertinent background for this problem. Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the naturally occurring electrons is removed. The radius of the orbit is 2.92 × 10-¹¹ m. Determine the magnitude of the electron's centripetal acceleration. Number Units

What is the magnitude of the net electric force on Q1?

= Two charged particles, 9₁ and 92, are located on the x-axis, with q₁ at the origin and 92 initially at x₁ 14.1 mm. In this configuration, q₁ exerts a repulsive force of 2.62 µN on 9₂. Particle 92 is then moved to X2 17.6 mm. What is the force (magnitude and direction) that q2 exerts on q₁ at this new location? (Give the magnitude in µN.) μN magnitude direction = ---Select--- ↑