What type of image can be larger or smaller than the object? A. An expansion
B. A magnification
C. A reduction
D. An enlargement

An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?

Aplane flying horizontally at an altitude of 1 mile and a speed of of 500mih passes directly over a radar station. find the rate at which the distance from the plane to the station is increasing when it is 2mi away from the station.