Two heavy wires spaced 3.5 m apart on a 50 hz ac powerline carry equal and opposite currents, with suspension poles located 500 m apart. (a) what is the peak and rms total magnetic force between these two wires. specify any assumptions in making this estimate. [8] (b) at what frequency would the wires vibrate? [2] (c) if the droop at the midpoint between power poles was 5 m, and the mass of the cable was 0.8 kg/m, by how much would the separation at the midpoint change for 1000 amps of rms current?

Which feature indicates that mars resides in the inner region of the solar system

Anybody wanna ? (picture included? )

1. how much energy is needed to raise the temperature of 40.0 g of argon from 25c to 40c? the specific heat capacity of argon is 0.520 j/(g·k) 2a. 23.0 ml of 0.100 m hcl (standard) are added from a buret to neutralize 50.0 ml of an unknown basic solution. 2b. if the oh- produced in the previous reaction came from ca(oh)2, then what is the molarity of the ca(oh)2? 3.calculate the new freezing-point of a solution when 60.5 grams of cacl2 solute is dissolved in 0.612 kg of water. 4. what is the maximum number of moles of alcl3 that can be produced from 5.0 mol al and 6.0 mol cl2? 5. a sample of oxygen gas has a volume of 150 ml when its pressure is 0.923 atm. if the pressure is increased to 0.987 atm and the temperature remains constant, what will the new volume be? 6. nitrogen gas in a closed container at a temperature of 100.0 oc and 3.0 atm is heated to 300 oc. what is the pressure of the gas at the higher temperature?