A car moved 50 km West and 80 km East in 2 hours. What is its average velocity
in m/s and km/h?

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

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.

Elements that have one valence electron and are very reactive are called