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Jacqueline653
2 years ago

To calculate the mass of a window pane, which is 20 m2 and consists of 1.5 cm thick glass, you can use the density of the glass (in this case 2.5 g/cm3) and the dimensions of the pane.

The mass of the disc can be calculated as follows:

Mass = density * volume

To calculate the volume of the disk, you must first calculate the area of the disk. The area of a disc can be calculated as follows:

Area = length * width

In this case, the area of the disk is 20 m2. Since the disc is 1.5 cm thick, its volume is:

Volume = surface area * thickness

= 20 m2 * 0.015 m

= 0,3 m3

The mass of the disk can now be calculated as follows:

Mass = density * volume

= 2,5 g/cm3 * 0,3 m3

= 0,75 kg

The mass of the window pane is thus 0.75 kg.

MichaelH77
2 years ago
Reply to  Jacqueline653

there has happened a mistake with the units, cm3 and m3 don’t cut off directly!

not 0.75 kg but 0.75 t or 750 kg is the result

Ranzino
2 years ago

because of the specified density in g/cm3, I would convert the 20 square meters into square centimeters

then calculate a volume of the (very flat) quad and the rest is simple

See if you can specify mass in grams or kilograms

DerJens292
2 years ago

These are 2 000 cm x 100 cm x 1.5 cm x 2.5 g/cm3

By 1000, you have kilos.

Jo3591
2 years ago
Reply to  DerJens292

That’s not true.

DerJens292
2 years ago
Reply to  Jo3591

My computer comes to 750 kg.

Jo3591
2 years ago

My head calculator too.

140Colin
2 years ago

Geg.: You’ve always written what’s been given.

Ges: Mass m

Sole: The area and the thickness are given. The product from both results in the volume (mixing) Before, however, convert the 20m2 into cm2.
And then multiply the calculated volume with the density, you already have the weight.

You see that when you look at the units:
cm2 = cm3
g/cm3 * cm3 = g

RedPanther
2 years ago

The volume is calculated from the given dimensions…

…and then mutates this with the given density.

Nelson100
2 years ago

First, calculate the volume and then the mass by weight.

You don’t even need a calculator.