Two particles with the same charges are held a fixed distance apart. the charges are equal in magnitude and they exert a force on each other. half of one of the charges is transferred to the other charge and the distance is unchanged. what happens to the force exerted by one charge on the other charge? the force is half as large the force is uncharged the force is twice as large the force is one fourth as large the force is three fourths as large

Along wire of diameter 1 mm is submerged in an oil bath of temperature ∞ 31°c. the wire has an electrical resistance per unit length of 0.01 ω/m. if a current of 103 a flows through the wire and the convection coefficient is 500 w/m2·k, what is the steady-state temperature of the wire? from the time the current is applied, how long does it take for the wire to reach a temperature that is within 1°c of the steady-state value? the properties of the wire are 8000 kg/m3, 500 j/kg·k, and 20 w/m·k.