You are Here: Home >< A-levels

help!!!!! watch

1. can someone help me with uncertainities
i suck at them

for example this question

The following measurements were made on a cylinder:
mass = 5.09 ± 0.01 kg
diameter = 9.4 ± 0.1 cm.

Calculate the actual uncertainty in the pressure.

will be looking forward for help
many thanks
2. Incoming.
3. (Original post by sanjukp)
can someone help me with uncertainities
i suck at them

for example this question

The following measurements were made on a cylinder:
mass = 5.09 ± 0.01 kg
diameter = 9.4 ± 0.1 cm.

Calculate the actual uncertainty in the pressure.

will be looking forward for help
many thanks
Think about what you're doing with the mass and diameter to find the pressure. Are you adding them? Multiplying them? Squaring them? Do you know what happens to the uncertainty when you mutliply two quantities or raise them to powers?
4. yes i knw that whn we multiply we add the percentage uncertainities
which is the uncertainity/true value x100
raise thm to powers idk :|
5. (Original post by sanjukp)
yes i knw that whn we multiply we add the percentage uncertainities
which is the uncertainity/true value x100
raise thm to powers idk :|
To find the fractional uncertainty in it's .
6. ahaan
got it
thaaanks
7. (Original post by sanjukp)
ahaan
got it
thaaanks
Cheers.

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: April 28, 2016
Today on TSR

The most controversial member on TSR?

Who do you think it is...

Uni strikes! How do they affect you?

Discussions on TSR

• Latest
Poll

All the essentials

Student life: what to expect

What it's really like going to uni

Essay expert

Learn to write like a pro with our ultimate essay guide.

Create a study plan

Get your head around what you need to do and when with the study planner tool.

Resources by subject

Everything from mind maps to class notes.

Study tips from A* students

Students who got top grades in their A-levels share their secrets

Groups associated with this forum:

View associated groups
Discussions on TSR

• Latest

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