What volume of gold would be equal in mass to a piece of copper with a volume of 141 ml? the density of gold is 19.3 g/ml; the density of copper is 8.96 g/ml?

Taking into account the definition of density,  the volume of gold that would be equal in mass to a piece of copper with a volume of 141 mL is 64.459 mL.

First you must know that density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space.

In other words, density is a quantity referred to the amount of mass in a given volume, that is, it is the relationship between the weight (mass) of a substance and the volume it occupies.

Then, the expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

In this case, for a piece of copper you know that:

Replacing in the definition of density:

Solving:

mass copper= 8.96 × 141 mL

mass copper= 1,263.36 g

To calculate the volume of gold that would be equal in mass to a piece of copper with a volume of 141 mL, you know that:

Replacing in the definition of density:

Solving:

19.3× volume gold= 1263.36 grams

volume gold= 65.459 mL

In summary,  the volume of gold that would be equal in mass to a piece of copper with a volume of 141 mL is 64.459 mL.

Learn more about density:

a c d and f

just finished the assignment

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied