Question

you have a small model car. describe the steps you would take to determine the density of this object.

Explanation:

Step1: Measure the mass of the model car

Use a balance scale to measure the mass (\(m\)) of the model car. Record the mass in appropriate units (e.g., grams).

Step2: Determine the volume of the model car

If the model car is a regular - shaped object (e.g., a rectangular - prism - like shape), measure its length (\(l\)), width (\(w\)), and height (\(h\)) using a ruler. Then calculate the volume (\(V\)) using the formula \(V = l\times w\times h\). If it is an irregular - shaped object, use the water displacement method: fill a graduated cylinder with a known volume of water (\(V_1\)), submerge the model car completely in the water, and measure the new volume of water (\(V_2\)). The volume of the model car \(V=V_2 - V_1\).

Step3: Calculate the density of the model car

Use the density formula \(
ho=\frac{m}{V}\), where \(
ho\) is the density, \(m\) is the mass, and \(V\) is the volume. Substitute the measured mass and calculated volume into the formula to get the density of the model car.

Answer:

1. Measure the mass (\(m\)) of the model car using a balance scale.
2. Determine the volume (\(V\)) of the model car (using geometric formulas for regular shapes or water displacement for irregular shapes).
3. Calculate the density \(

ho=\frac{m}{V}\).