A piece of aluminium has a mass of 200 kg and a volume of 0.074 m 3. Calculate its density in kg/m 3, to two significant figures. The kilogram (kg) is the standard unit for mass. The cubic metre ...

Now several speed bumps and several years down the road, the project announced it has collected more than 10,000,000 kg of trash from our oceans. According to a press release, those 10 million kg ...