Recent content by Crushgear64

Homework Statement A 40kg branch falls 5.5m and lands on a roof. The roof withstood the the impact. Homework Equations If the impact time was 0.4 second calculate the magnitude of the average force exerted on the roof during the impact. The Attempt at a Solution F=ma doesn't seem right...

Homework Statement If a 6v incandescent globe is running at 6v with 0.6amps has a 0.909 resistor introduced into it's circuit which drops the voltage across it to 5.501v and 0.55amps how much does the brghtness change? The Attempt at a Solution 5.501*0.55/6*0.6 original brightness. Is it as...

Why do they 'cling' more?

This is high school science, but I'm not looking for anything over simplified.

Homework Statement Why does copper conduct electricity better than other metals like nickel and alloys like steel? Also other metals like Zinc, Tin, Aluminium, Iron and Lead. The Attempt at a Solution When I tried researching it seemed related to the amount of electrons to carry...

Homework Statement Why does a 12mol/L solution of HCl used to clean rust off iron get a brown coating after being exposed to air and washed with water, while the same concentration solution of phosphoric acid takes a day to have an apparent brown coating. Homework Equations Explain the...

Homework Statement Have to do a write up of an experiment on specific heat capacity of metals. Tested 50g of nickel and lead, each heated to 90C and then put into 50g of water and measuring the change in its temperature. Found that lead has a lower specific heat capacity. Homework Equations...

Can you explain what actually determines it then?

Just a simple diagram to demonstrate what is happening/why. I know the heat capacity is related to the ability of the material to store the heat energy as potential energy rather than kinetic energy, but I'm not sure how to illustrate it.

Our teacher decided that we need a diagram to go along with every experiment write up, as well as a graph.

I have done some basic C++, like making small games in the command prompt and I was looking at developing iOs apps in Xcode but I can't seem to find any tutorials that continue past the absolute basics and the apple tutorials do not seem to help at all. I was wondering if anyone knew good set of...

1. How do I draw a diagram to demonstrate why motor oil has a higher specific heat capacity than water?