Chapter U1, Problem SI4RE

Interpretation Introduction

Interpretation:

The density of one penny needs to be compared with the density of two pennies.

Concept introduction:

Density of a substance is defined as ratio of mass to volume. It is calculated as follows:

$d=\frac{m}{V}$

Here, m is mass and V is volume.

Thus, it is directly proportional to mass and inversely proportional to volume.

Answer to Problem SI4RE

Density of one penny is same as that of two pennies.

Explanation of Solution

When amount of substance is increased then volume and mass of that substance are increased keeping the density same.

$d=\frac{m}{V}$

So, if amount is double then volume is doubled and mass is also doubled. But density as the ratio of the two, remains the same.

So, density of one penny will be same as that of two pennies.

Conclusion

Density will same in both the cases.