Recent content by alonzo

Tide, Further 2 my post yesterday on tough integration... Hey Tide! Thanks 4 answering my question, ur an absolute legend. I now know how 2 do parts one and 2 of the question. But I'm a bit stumped on part 3. I'm not sure wat 2 do when the contaminant is overflowing into the lake. Just 2...

Please help! This problem is really complex and i have no idea where to start (or finish for that matter!) A holding tank of 7000 litres is full of water which has been contaminated by a pollutant. The tank contains 0.01 percent contaminant by volume. Water with a contaminant concentration of...

Please help me wif these problems! I have no idea. A person with a body resistance between his hands of 10 kohms accidently grasps the terminals of a 20 kV power supply. (a) Draw a circuit diagram including all the data. (b) If the internal resistance of the power supply is 2000 ohmns, what...

Thanks Tide but i still don't understand the second half of the question! Hey Tide, thanks 4 helping me wif the first part but I am still stumped on the second part. Can u please give me some equations or a means of solving the question about the velocity of the car? Thanx!

Please help me with this question! I understand the concepts of potential difference and charge etc but i don't understand what to do with the velocity. 1) In a lightning flash, the potential difference between the cloud and the ground is 1.0 x 10exp9 V and the quantity of charge transferred is...

Please help a girl who doesn't understand physics! Plz help me with this problem! I'm totally lost. 1) Sketch the electric field lines both between and outside two concentric conducting spherical shells when a positive charge q1 is on the inner shell and negative charge -q2 is on the other...

Physics problem - please help! I have absolutely no idea wat this question is talking about. Young’s modulus for bone is about 1.4 x 10E10 Pa, and bone can only undergo a 1.0% decrease in length before fracturing, so (a) What is the maximum force that can be applied to a bone whose minimum...

This is a tricky one! I've got another annoying question about fluids that really bugs me. An underwater living chamber is wide open on the bottom for easy entrance. What keeps the water from rushing in? What’s the pressure inside? What would happen if it were punctured at the top? Describe...

Hi! I have a physics problem that I just don't understand. It is as follows: Imagine that you are in an elevator with a tank of water and three goldfish. A device in the gravel (of the fish tank) measures gauge pressure at the bottom at the tank. (a) Suppose it reads 4000 N / m² with the...