Turn on thread page Beta
    • Thread Starter
    Offline

    2
    ReputationRep:
    The volume of body, having an irregular shape, is to be determined . In sea water it has an apparent mass of 151.9 kg, but in air the mass is 244.9 kg.
    calculate the density of this object.
    Take density of sea water as 1025 and the gravitational acceleration as 9.81 m/s^2.
    Offline

    10
    ReputationRep:
    The difference in weight is due to the upthrust in water. Find the difference in weight first so that you know what the upthrust is.

    The upthrust is also equal to the weight of water displaced. So now you also know the weight of water displaced, you can calculate the volume of that water which, of course, is the same as the volume of the object.
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: March 9, 2018
The home of Results and Clearing

2,431

people online now

1,567,000

students helped last year

University open days

  1. SAE Institute
    Animation, Audio, Film, Games, Music, Business, Web Further education
    Thu, 16 Aug '18
  2. Bournemouth University
    Clearing Open Day Undergraduate
    Fri, 17 Aug '18
  3. University of Bolton
    Undergraduate Open Day Undergraduate
    Fri, 17 Aug '18
Poll
Do you want your parents to be with you when you collect your A-level results?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.