When we found the electric field of a charged ring at a point on the ring's central axis, which did we sum the field components perpendicular to the central axis the magnitudes of the field vectors the field components parallel to the central axis

Acar of mass m goes around a banked curve of radius r with speed v. if the road is frictionless due to ice, the car can still negotiate the curve if the horizontal component of the normal force on the car from the road is equal in magnitude to 101) a) mv2/r b) mg/2. d) mg e) tan[v2/(eg)]

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?

Earth's atmosphere is composed of mostly two gases. name the two gases that make up the majority of the atmosphere and use the pie chart to tell the percentages of each.