A resistance is added in parallel to a 470 Ω resistance to give an effective resistance of 330 Ω. What is the approximate value of the added resistance? A) 140 Ω
B) 680 Ω
C) 1.1 kΩ
D) 1.8 kΩ

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?