Question

question 2 (2 points)
listen
steel
mass = 780 g
nylon
mass = 115 g
pine wood
mass = 50 g
styrofoam
mass = 5 g
which of the following is the most dense (assume all blocks are the same size):
a block of pine wood
a block of steel
a block of styrofoam
a block of nylon

Explanation:

Step1: Recall the density formula

Density formula is \(
ho=\frac{m}{V}\), where \(
ho\) is density, \( m\) is mass and \( V\) is volume.

Step2: Analyze the given situation

Since all blocks have the same size (i.e., same volume \( V\)), density is directly proportional to mass (\(
ho\propto m\) when \( V\) is constant).

Step3: Compare the masses

The masses are: steel (\(m = 780\space g\)), nylon (\(m = 115\space g\)), pine wood (\(m = 50\space g\)), styrofoam (\(m = 5\space g\)). As \(780>115 > 50>5\), steel has the highest mass.

Answer:

B. A block of Steel