Question

Определите вес дубового бруска размеров 150x500x150 мм pg=800 кг/м3

Answer 1

M=p*v(m-масса, p-плотность, v-объем) переведем мм в м, 150мм=0.15м ;500мм=0.5м; 150мм=0.15мчтобы найти v надо перемножить имеющиеся размеры, т.к.  v=a*b*c (a-длина, b-ширина, с-высота)0.15*0.15*0.5*800= 9  
9*10=90н

Answer 2

Calculating the Weight of Oak Timber

To determine the weight of oak timber with the given dimensions of 150x500x150 mm and a density of 800 kg/m3, we can use the formula:

Weight = Volume x Density

First, we need to calculate the volume of the oak timber.

Calculating the Volume of the Oak Timber

The volume of the oak timber can be calculated using the formula:

Volume = Length x Width x Height

Substituting the given dimensions: - Length = 150 mm - Width = 500 mm - Height = 150 mm

Volume = 150 mm x 500 mm x 150 mm

Converting the Volume to Meters

Since the density is given in kg/m3, we need to convert the volume from cubic millimeters to cubic meters.

1 cubic meter = 1,000,000 cubic millimeters

So, the volume in cubic meters is: Volume = (150 mm x 500 mm x 150 mm) / 1,000,000

Calculating the Weight

Now that we have the volume in cubic meters, we can calculate the weight using the formula:

Weight = Volume x Density

Substituting the calculated volume and the given density: Weight = (150 mm x 500 mm x 150 mm / 1,000,000) m3 x 800 kg/m3

Final Calculation

Let's calculate the weight of the oak timber using the given formula.