Summarize how the direction of the electric field and the sign of the charge placed in that field determine the direction of the force.

Which property of fossils allow scientists to determine the relative rock ages..

Along wire carrying a 4.2 a current perpendicular to the xy-plane intersects the x-axis at x=−1.7cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+1.7cm. part a at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? express your answer to two significant figures and include the appropriate units.

What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?