Calculate the density of a rectangular solid which has a mass of 25.71g. it is 2.30cm long, 4.01 cm wide and 1.82 cm high.

How did planetesmals form planets? a. they broke apart into smaller chunks.b. they collided and stuck together.c. they cooled and pulled ice together.d. they began to rotate.

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?