Two particles, each carrying positive charge q, are on the y axis, one at y=+a and the other at y=−a. part a calculate the potential for any point on the x axis. express your answer in terms of the variables q, x, a, and the coulomb's law constant k. v(x)v ( x ) = nothing request answer part b use your result in the previous part to determine the electric field at any point on the x axis. express your answer in terms of the variables q, x, a, the coulomb's law constant k, and the unit vector i^. use the 'unit vector' button to denote unit vector in your answer. e⃗ (x)e → ( x ) = nothing

The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?