A fixed incident ray strikes plane-mirror at an angle of incidence of 20°. If the mirror is now rotated through angle of 30°, calculate the angle between
the incident and reflected rays.​

it is easily magnetized.

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.