When an electron finds itself under a force of 7.1 x 1012 N acting to the left, it must be placed in a field of O 4.44 x 107 N/C to the right O 8.10 x 108 N/C to the right O 5.09 x 104 N/C to the left O 4.44 x 107 N/C to the left
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- 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.A particle with a charge of +4.20 nC is in a uniform elec- tric field É directed to the left. It is released from rest and moves to the left; after it has moved 6.00 cm, its kinetic energy is found to be +1.50 X 10 J. (a) What work was done by the electric force?A constant electric field accelerates a proton from rest through a distance of 2.15 m to a speed of 1.65 × 105 m/s. (The mass and charge of a proton are mp 1.67 x 10 HINT (a) Find the change in the proton's kinetic energy (in J). J (b) Find the change in the system's electric potential energy (in J). J (c) Calculate the magnitude of the electric field (in N/C). N/C kg and 9p = e = 1.60 x 10 C.)
- 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 3.09 × 10-11 m. Determine the magnitude of the electron's centripetal acceleration.k = 8.99 x 109 Nm2/C2, me = 9.11 x 10 – 31 kg, e = 1.6 x 10 – 19 C, mp = 1.67 x 10 – 27 kgA proton and an alpha particle (charge = 2e, mass = 6.64 ✕ 10−27 kg) are initially at rest, separated by 8.76 ✕ 10−15 m. (c) Find the speeds of the proton and alpha particle, respectively, at infinity
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