2. suppose a dipole ⃗p is placed in a nonuniform electric field e⃗ = eˆi that points along the x axis. if e⃗ depends only on x and the electric field varies very slowly from the negative to the positive charge in the dipole (2l is the distance between charges in the dipole), show that the net force on the dipole is f⃗ = (⃗p · de⃗ dx )ˆi.

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

Asubmarine has a "crush depth" (that is, the depth at which water pressure will crush the submarine) of 250 m. what is the approximate pressure (water plus atmospheric) at this depth? (recall that the density of seawater is 1025 kg/m3, g = 9.81 m/s2, and 1 kg/(ms2) = 1 pa = 9.8692 10-6 atm.) a. 34.8 atm b. 24.8 atm c. 25.8 atm d. 7.8 atm

Asmall 21 kilogram canoe is floating downriver at a speed of 1 m/s. what is the canoe's kinetic energy?