Q. A lens X has following observation a. When the objects is placed at infinity, the image is formed at focus of the lens
b. When a object is placed at 60 cm from the lens, A real image is forced at 10 cm from lens on other
side
The lens has positive Power

The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?