A student measures the mass of a 10m^3 block of gold to be 500 kg what is the density of the gold

Taking into account the definition of density, the density of the gold is 50 .

First of all,  it is necessary to know the definition of density. Density is a quantity that allows us to measure the amount of mass in a certain volume of a substance. It is an intrinsic property of matter, since it does not depend on the amount of substance that is considered.

Density expresses the relationship between the mass and the volume of a body, so the expression for its calculation is the quotient between the mass of a body and the volume it occupies:

In this case, you know:

Replacing in the definition of density:

Solving:

density= 50

In summary, the density of the gold is 50

Learn more about density:

d = 50 kg/m³

Explanation:

density =

mass = 500 kg

volume = 10m³

= 50

d = 50 kg/m³

i think it's letter a.

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.