 Members

20

11 Neutral

• Rank
Quark

## Profile Information

• Location
Scotland
• Interests
Physics, Chemistry, Maths
• College Major/Degree
Perth High School
• Favorite Area of Science
Physics
1. Ok so i spelt Auger wrong, big deal.
2. For a glacial study i am undertaking i want to prove a hypothesis that a Ribbon lake once occupied a valley because it was dammed at the end by morraine. For this i will be using an ogre too dig down into the soil on the valley floor. Does anyone no what sort of things i should be looking for in the soil that will prove my Hypothesis. Any info would be greatly appreciated.
3. Doesn't the fetch( the distance the waves have travelled) also have a part to play in wave energy and hieght.
4. A drop in the economy. Mass loss of life. Displacment of people. That sort of stuff.
5. Thanks for the help, I got the answers i needed.
6. Hi, could someone please help me with the question below : Crystals of hydrated sodium carbonate left exposed to the atmosphere gradually lose some of their water of crystallisation. The formula of the crystals may be given by Na(2)CO(3).xH2O where x has a numerical value between 0 and 10. 16 grams of the crystals were dissolved in water and made upto 250cm3 in a standard flask. To determine the value of x, 25cm3 of the sodium carbonate solution were titrated with 1.0M hydrochloric acid. 15cm3 of the acid was required for neutralisation. (1) Calculate the mass of sodium carbonate (Na(2
7. ## Transposing Formula for Transphormers

No never heard of them.
8. ## Transposing Formula for Transphormers

Precisely
9. ## Transposing Formula for Transphormers

Sice P=IV then the power would change would it not because the current and the voltage would be changing. This is how i would do that question - In secondary - P=IV 1600=200*V V=? So using equation ?/100 = I/200 then you would cross multiply to work out I Note - the ? is the answer for the voltage which can be found out using the P=IV equation above. The site does not allow you to give answers only help so try doing it yourself.
10. ## Transposing Formula for Transphormers

I take it by P2 you mean power. By the way power can be measured in kilo volts.
11. ## Transposing Formula for Transphormers

Do you know the current or the voltage for both the primary and secondary.
12. ## Transposing Formula for Transphormers

Well its a ratio. So The number of coils in the secondary divided by the primary will give a constant. Say the number of coils in the secondary was 300 and the number of coils in the primary was 150. The the constant would be 2. If you know the current in the primary you can then multiply it by two to get the current in the secondary or if you have it for the secondary you can divide it by two to get the current in the primary. Note the ratio does not work for the power.
13. ## Transposing Formula for Transphormers

Remember P=IV so if you know the current and the voltage you can work out the power on both the primary and secondary sides of the tranformer. Power does not fit into the transformer equation and must be worked out seperately.
14. Basically ozone is split up when it absorbs UV radiation form the sun. It is created when UV rays hit O2 molecules creating O atoms. Thes O atoms join with O2 molecules to create Ozone (O3). There is a full explanation of this on wkipedia - http://en.wikipedia.org/wiki/Ozone_layer Hope it helps.