in coming to a stop, a car leaves skid marks 86m long on the highway. assuming a constant acceleration of -6.00m/s/s, determine the speed of the car just before braking.

Select the three ways that the parallel-plate capacitor differs from a car battery.

What are the necessary conditions for fusion?

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.