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Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z

Distinguish between linear momentum and angular momentum

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?