Answer:
The mass of the cube is 420.8 kg.
Explanation:
Given that,
Length of edge = 38.9 cm
Density
We need to calculate the volume of cube
Using formula of volume
We need to calculate the mass of the cube
Using formula of density
Hence, The mass of the cube is 420.8 kg.
Answer:
both technicians
Explanation:
parts of a machine that move against themselves need to be lubricated to reduce friction and heating in the system.
since friction causes heating and wearing away of parts, it is important to lubricate them.
engine bearings move against themselves, because the teeth on one moves another
Deacreasing the mass of one objects.
Increasing the mass of one of the objects.
Deacreasing the distance between the objects. (hope this helps)