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physics

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  • How is mass measured?
    by balance or scale
  • What is density?
    It is a mass unit of volume of a material substance
  • What is the volume of 27g of aluminium if it's density is 2.7g/cm3?
    27g/2.7g/cm3=10cm3
  • What is none uniform density?
    when the object is not made of the same material
  • To increase the stability of an object the base area should be?
    as wide as possible
  • To increase the stability of an object the centre of gravity should be?
    as low as possible
  • What is center of mass?
    It is the point where the whole weight can be concetrated
  • If density is 3okg/m3 and mass is 15kg what is volume?
    d=m/v v=m/d 15kg/30kg/m3=0.5m
  • What is the equation of density?
    d=m/v
  • Which are the units of density?
    g/cm3 or kg/m3
  • If it is less dense will it float or sink?
    it will float
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