The motion of an electron is given by x(t)=pt3+qt2+r, with p = -2.3 m/s^3 ,q = +1.5 m/s^2 , and r = +9.0 m. a) determine its velocity at t=0.b) determine its velocity at t=1s. c) determine its velocity at t=2s. d) determine its velocity at t=3s.

Explain what makes a passenger in a turning car slide toward the door. critical thinking

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.

Aprotein molecule in an electrophoresis gel has a negative charge. the exact charge depends on the ph of the solution, but 30 excess electrons is typical. what is the magnitude of the electric force on a protein with this charge in a 1600n/c electric field? write in two significant numbers, and also in newton