4. On a flat, level road, a 1,200-kilogram car travels around a curve having a constant radius of 45 meters. The centripetal acceleration of the car has a
constant magnitude of 1.8 m/s.
Which type of force provides the centripetal force needed for the car to travel
around the curve?

Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle  can be assumed at 30 deg