The atmospheric pressure is roughly 1 bar, or 100,000 pascal. That means 100,000 newton per square meter (equivalent to the mass of about 10 tons). Actually, that's the approximate pressure at sea level; the pressure (force or weight per square meter) varies a lot depending on the altitude.
10Kilo
50kg
depend on the stone used for the gravel.
Density of loose soil is about 1200 kg/m3 1 cubic meter of soil may weigh more than this if compacted or moist.
The question cannot be answered. A square metre is a measure of area not of volume. A block of lead, with an area of 1 square metre could be a few atoms thick or several metres thick. Their weights will differ considerably.
47kg
10Kilo
50kg
The answer depends on the material and quality of the carpet.
You cannot weigh an area. Just as you cannot weigh a distance. (How much does one centimeter weigh?)
It depends on the glass type, but for general purposes it is about 19.8 kilograms per square meter
560 kilograms
depend on the stone used for the gravel.
GSM = grams per square meter Cut a 1 meter by 1 meter of fabric and weigh it in grams or weigh the fabric in grams (G) and measure the length in meters (L) and width in meters (W) and calculate: G/LW = grams per square meter = GSM
Weigh it in grams and divide by its area measured in square metres.
You cannot weigh an area, but you can weigh a volume... so, one cubic meter of stainless steel weighs 7480 - 8000 kg. See related link for the source.
Density of loose soil is about 1200 kg/m3 1 cubic meter of soil may weigh more than this if compacted or moist.