An a particle fired head-on at a stationary nickel nucleus approaches to a radius of 25 fm before being turned around. What is the maximum Coulomb force exerted on the a particle? Express your answer using two significant figures. F = ΜΕ ΑΣΦ Submit Request Answer Part B ? N What is the electric potential energy of the a particle at its point of closest approach? Express your answer using two significant figures. U = ΕΠΙ ΑΣΦ Submit Request Answer Part C Find the initial kinetic energy of the a particle. Express your answer using two significant figures. ΕΠΙ ΑΣΦ K = ? ? MeV MeV

Wsez has an exciton binding energy of 240 meV, compared to 90 meV for MoSz. Which material, MoSz or WSe2, do you expect to have the larger dielectric constant? O Wsez O They should have the same dielectric constant MoS2 Question 11 Consider again 2D materials WSez and MoS2 with exciton binding energies of 240 meV and 90 meV, respectively. In which material is the Bohr exciton radius smaller? They have the same Bohr exciton radius Wsez MoS2

Problem A newly discovered light positively charged particle has a mass of m and charge q. Suppose it moves within the vicinity of an extremely heavy (fixed in place) particle with a positive charge Q and mass M. When the light particle is xi distance from the heavy particle, it is moving directly away from the heavy particle with a speed of vi. a) What is the lighter particle's speed when it is xf away from the heavy particle? (Consider the Newtonian Gravitation acting between the two charged particles. Ignore the effects of external forces) Solution: We may solve this using two approaches. One involves the Newton's Laws and the other involving Work-Energy theorem. To avoid the complexity of vector solution, we will instead employ the Work-Energy theorem, more specifically, the Conservation of Energy Principle. Let us first name the lighter particle as object 1 and the heavy particle as object 2. Through work-energy theorem, we will take into account all of the energy of the…

Four electrons are located at the corners of a square 10.0 nmnm on a side, with an alpha particle at its midpoint. How much work is done by the Coulomb force when the alpha particle moves to the midpoint of one of the sides of the square?       Express your answer in joules.

What is the potential energy in Joules of a V5+ ion and a Cl ion that are separated by 759 pm? (Answer must have correct sign. State answer in scientific notation with two digits right of the decimal; for example, 1.23e+8. Do not include unit in answer.) Moving to the next question prevents changes to this answer, Qussti

An electron is acceleraled from rest through a potential difference of 3750 V. It enters a region where B = 4.0 × 10-3T perpendicular to its velocity. Calculate, the Radius of the path it will follow. Solve and show the solution. Ans. 5.2 cm

... Path of trajectory AV w An electron is fired at a speed v¡ = 3.4 x 106 m/s and at an angle 0; = 30.5° between two parallel conducting plates as shown in the figure. If s = 1.5 mm and the voltage difference between the plates is AV = 98 V, determine how close, w, the electron will get to the %3D %3D bottom plate. Put your answer in meters and include at 6 decimal places in your answer. Do not include units. The x-axis of the coordinate system is in the middle of the parallel plate capacitor. Round your answer to 6 decimal places.

I Review I Constants In an experiment, one of the forces exerted on a Part E proton is F = -ax? i, where a = 12 N/m². What is the potential-energy function for F? Let U = 0 when x = 0. Express your answer in terms of a and x. ? U(x) = Submit Request Answer Provide Feedback Next

The Bohr radius ao is the most probable distance between the proton and the electron in the Hydrogen atom, when the Hydrogen atom is in the ground state. The value of the Bohr radius is: 1 ao = 0.529 angstrom. One angstrom is 10-10 m. What is the electric potential produced by the proton at a distance of 1.12 Bohr radius away from the proton? Submit Answer What is the potential energy of the proton-electron system when they are at this distance from each other? Submit Answer

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