Consider a charge Q1(+5.0μC) fixed at a site with another charge Q2(charge +3.0μC, mass 6.0μg) moving in the neighboring space. Evaluate the potential energy of Q2 when it is 4.0 cm from Q1. (Note: Q1 is held fixed in its place.) k = 9.00×109 N⋅m2/C2 6.2 J 5.5 J 7.1 J 3.4 J
To form a hydrogen atom, a proton is fixed at a point and an electron is brought from far away to a distance of 0.529×10−10m, the average distance between proton and electron in a hydrogen atom. How much work is done? k = 9.00×109 N.m2/C2 4.36×10^−18 J 2.36×10^−18 J 6.55×10^−18 J 5.40×10^−18 J
What is the average power output of a heart defibrillator that dissipates 400 J of energy in 10.0 ms? 6.00×10^8 W 8.00×10^4 W 4.00×10^4 W 3.00×10^8 W
Find the maximum potential difference between two parallel conducting plates separated by 0.500 cm of air, given the maximum sustainable electric field strength in air to be 3×106 V/m. 10 kV 15 kV 20 kV 30 kV
An evacuated tube uses an accelerating voltage of 40 kV to accelerate electrons to hit a copper plate and produce X-rays. Non-relativistically, what would be the maximum speed of these electrons? Mass of an electron = 9.11×10−31 kg Negative Charge of an electron = 1.6×10−19 C 3.38×10^8 m/s 2.00×10^8 m/s 1.19×10^8 m/s 2.28×10^8 m/s
Find the ratio of speeds of an electron and a negative hydrogen ion (one having an extra electron) accelerated through the same voltage, assuming non-relativistic final speeds. Take the mass of the hydrogen ion to be 1.67×10−27 kg. Mass of an electron = 9.11×10−31 kg 75.0 30.5 50.5 42.8
In nuclear fission, a nucleus splits roughly in half. What is the potential 2.00×10−14 mm from a fragment that has 46 protons in it?7.66×10^6 V 5.55×10^6 V 3.31×10^6 V 8.97×10^6 V
A 0.500-cm-diameter plastic sphere, used in a static electricity demonstration, has a uniformly distributed 40.0-pC charge on its surface. What is the potential near its surface? k = 9.00×109 N.m2/C2 144 V 110 V 120 V 150 V
Throughout a region, equipotential surfaces are given by z=constant. The surfaces are equally spaced with V=100V for z=0.00m, V=200V for z=0.50m, V=300V for z=1.00m. What is the electric field in this region? 100 V/m in the -z direction 400 V/m in the -z direction 200 V/m in the -z direction 300 V/m in the -z direction