Acentripetal force of 1,400 newtons acts on a car rounding a curve with a radius of 150 meters. if the car has a mass of 2,100 kilograms, find its velocity, in meters per second.

Suppose while hauling rocks, you accidentally drop one. it breaks apart in flat, planar sections. what type of rock did you just drop? 20 points

The illuminance of a surface varies inversely with the square of its distance from the light source. if the illuminance of a surface is 120 lumens per square meter when its distance from a certain light source is 6 meters, by how many meters should the distance of the surface from the source be increased to reduce its illuminance to 30 lumens per square meter?

Which is an advantage of subdividing science into different areas?