Solve the following numericals Cany)
DA conver mirror has a focal length of 18 cm
The image of an object kept in
front of
of the mirror is half the height of the
obiect. what is the distance of the objet
from the mirror

When an object is heated it contracts. a. true b. false

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.

Sound is a disturbance that travels through a medium as a