An object is positioned in front of a concave mirror behind the center of curvature. Choose the ray diagram that shows the proper positioning of the image.

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

An object of dimensions 50 cm x 40 cm x 0.20 cm has a mass 60g. find its density in g/cm3 and kg/ m3

In a stagnant pool of water, a crayfish may spend much of its time lying with one side of its carapace near the surface of the water. in this position, it will move the walking legs on that side in a rhythmic back-and-forth motion. explain the likely function of this behavior.