Abrick has a volume of 2,300 ml and a mass of 3.4 kg. what is the density of the brick?

Orque can be calculated by multiplying the force (n) applied at 90? to the lever arm at a distance (m) from the pivot point (point of rotation), the compound si unit for the torque is n? m. if the force (at 90? to the lever arm) applied is 15 n and it is applied at 2.0 m from the pivot point (point of rotation), what is the torque on the lever?

Idon’t quite understand this problem

Which branches of natural science include the study of an organism that lived 10 million years ago