Join TSR now and get all your revision questions answeredSign up now

Help with a pascals conversion please!

Announcements
    • Thread Starter
    Offline

    3
    ReputationRep:
    Hi!
    I would like to know how you do this
    I know that
    Pressure (Pa) = force/area
    Therefore, it will be 4.8N/m^2
    Attached Images
     
    Offline

    3
    ReputationRep:
    One step at a time.

    4.8 N is 4800 mN
    1 m^2 is 10,000 cm^2 (check you understand why)

    so 4.8 N/m^2 is 4800 mN / 10,000 cm^2 = 0.48 mN / 1 cm^2

    so 0.048 mN / cm^2
    • Thread Starter
    Offline

    3
    ReputationRep:
    (Original post by mik1a)
    One step at a time.

    4.8 N is 4800 mN
    1 m^2 is 10,000 cm^2 (check you understand why)

    so 4.8 N/m^2 is 4800 mN / 10,000 cm^2 = 0.48 mN / 1 cm^2

    so 0.048 mN / cm^2
    Omg that makes so much sense
    I didn't realise the m was mega, I thought it was like mass which is kg
    I'm so silly
    Thank you!


    Posted from TSR Mobile
    • Thread Starter
    Offline

    3
    ReputationRep:
    (Original post by mik1a)
    One step at a time.

    4.8 N is 4800 mN
    1 m^2 is 10,000 cm^2 (check you understand why)

    so 4.8 N/m^2 is 4800 mN / 10,000 cm^2 = 0.48 mN / 1 cm^2

    so 0.048 mN / cm^2
    Hi
    I'm still confused lool
    I understand you converting pascals to mega pascals
    And I know that

    4.8Pa = 4.8N/m^2

    But how does
    4.8N/m^2 = 4800mN/10,000cm^2??



    Posted from TSR Mobile
    Offline

    3
    ReputationRep:
    apply a force of 4.8 N to an area of 1 m^2 (i.e. 4.8 Pa)

    same as applying a force of 4800 mN to an area of 10,000 cm^2

    Exactly the same force, same area, I just changed the units of each.

    m is the milli prefix and is one thousandth, so 1 N = 1000 mN, just like 1 m = 1000 mm.
    Online

    3
    ReputationRep:
    Fwiw the prefix for mega is capital M, the case is important
 
 
 
Poll
Do you have exam superstitions?

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

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