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(a) Consider an arbitrary electrostatic field configuration. A small test charge is placed at a null point (i.e., where E = 0) of the configuration. Show that the equilibrium of the test charge is necessarily unstable.
(b) Verify this result for the simple configuration of two charges of the same magnitude and sign placed a certain distance apart.
A thin uniform rod has a length of 0.500m and is rotating in a circle on a frictionless table. The axis of rotation is perpendicular to the length of the rod at one end, What is the mass of the bug
A dock worker applies a stable horizontal force of 79.0 {rm N} to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves 14.0 {rm m} in the first 6.00 {rm s}.What is the mass of the bl..
An air parcel occupied by an ideal gas (T1 = 255 K, V1 = 1500m3, m1 = 1680 kg) collides and mixes with a second air parcel occupied by a second ideal gas (T2 = 280 K, V2 = 1200 m3, m2 = 1392 kg). Assuming the specific heat capacities of the gases in ..
An oscillator consists of a block of mass 0.800 kg connected to a spring. When set into oscillation with amplitude 34.0 cm, it is observed to repeat its motion every 1.000 s. Find the maximum force exerted on the block
Please helps me out for determining the following if the capacitor in the circuit below is initially uncharged.
A 11-g piece of Styrofoam carries a net charge of -0.85 ?C and floats above the center of a large, What is the charge per unit area on the plastic sheet
A snowball rolls down a 200 m long hill at an angle of 30o above the horizon. After leaving the hill it rolls toward a 1200 kg small car on an icy horizontal surface. What is the speed of the snowball at the bottom of the hill
A VW Beetle goes from 0 to 102 mi/h with an acceleration of +6.59 m/s2. A top-fuel dragster can go from 0 to 102 mi/h in 1.52 s. What is the acceleration (in m/s2) of the dragster
A sodium atom (Z = 11) contains 11 protons in its nucleus. Strictly speaking, the Bohr model does not apply, determine the corresponding radius r of the outermost Bohr orbit
Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. Determine the astronaut's orbital speed
Five-gram samples of copper and aluminum are at room temperature
a ball is tied to the end of a cable of negligible mass. the ball is spun in a circle with a radius 2.00 m making 7.00
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