1.If you have an object that has a mass of 8 grams and a volume of 4 cm3 , what is the objects density?
2g/cm3
2.A rock is found in nature with a mass of 36 grams. When using the water displacement method, the water level began at 30ml and rose to 36ml once the rock was put in. What is the volume of the rock?
6ml
1. Density = 8g/4cm^3 = 2g/cm^3.
To find the density of an object, you need to divide its mass by its volume.
1. In this case, the mass of the object is given as 8 grams and the volume is given as 4 cm³. To find the density, you divide the mass by the volume as follows:
Density = Mass / Volume
Density = 8 g / 4 cm³
Density = 2 g/cm³
So, the density of the object is 2 g/cm³.
2. To find the volume of the rock using the water displacement method, you need to subtract the initial water level from the final water level after placing the rock.
In this case, the initial water level is 30 ml, and once the rock is placed in, the water level rises to 36 ml. The difference between these two levels represents the volume of the rock:
Volume of Rock = Final Water Level - Initial Water Level
Volume of Rock = 36 ml - 30 ml
Volume of Rock = 6 ml
So, the volume of the rock is 6 ml.