A particle (m =9 mg, q = -4 pC) is moves in a uniform electric field of 23 N/C inlthe positive x direction. At t = 0, the particle is moving 46
m/s in the positive x direction and is passing through the origin. How
far is the particle from the origin at t = 4 s?

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?

James joule carefully measured the difference in temperature of the water at the top and bottom of a waterfall. why did he expect a difference

A500-watt vacuum cleaner is plugged into a 120-volt outlet and used for 30 minutes. how much current runs through the vacuum? 900,000 amps 60,000 amps 4.2 amps 0.24 amps