A metal density 10 kg/m³
weights 2kg
kg in water. Find
its weight in air??
Answer it fast
correct answer I will mark as branlist answer
Answers
The density of a material, typically denoted using the Greek symbol ρ, is defined as its mass per unit volume.
ρ = m V where:
ρ is the density
m is the mass
V is the volume
The calculation of density is quite straightforward. However, it is important to pay special attention to the units used for density calculations. There are many different ways to express density, and not using or converting into the proper units will result in an incorrect value. It is useful to carefully write out whatever values are being worked with, including units, and perform dimensional analysis to ensure that the final result has units of massvolume. Note that density is also affected by pressure and temperature. In the case of solids and liquids, change in density is typically low. However, when regarding gases, density is largely affected by temperature and pressure. An increase in pressure decreases volume, and always increases density. Increases in temperature tend to decrease density since volume will generally increase. There are exceptions however, such as water's density increasing between 0°C and 4°C.
Below is a table of units in which density is commonly expressed, as well as the densities of some common materials.
Common Density Units
Unitkg/m3kilogram/cubic meterSI Unitkilogram/cubic centimeter1,000,000gram/cubic meter [g/m3]0.001gram/cubic centimeter1000kilogram/liter [kg/L]1000gram/liter [g/L]1pound/cubic inch [lb/in3]27,680pound/cubic foot [lb/ft3]16.02pound/cubic yard [lb/yd3]0.5933pound/gallon (US)119.83pound/gallon (UK)99.78ounce/cubic inch [oz/in3]1,730ounce/cubic foot [oz/ft3]1.001ounce/gallon (US)7.489ounce/gallon (UK)6.236ton (short)/cubic yard1,186.6ton (long)/cubic yard1,328.9psi/1000 feet2.3067
Density of Common Materials
MaterialDensity in kg/m3Earth's atmosphere at sea level1.2Water at standard temperature and pressure1,000The Earth5,515.3Iron7,874Copper8,950Tungsten19,250Gold19,300Platinum21,450Atomic nuclei2.3×1017Black holeabove 1×1018
density = mass / volume
10 = 2 / volume
volume = 1/5