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1. Homework Statement Ok so my teacher used this example in class, he had this flat wheeled cart rolling on the floor. The object was to release a bucket of sand on top of the flat cart to see if the cart would slow down or accelerate. Easily, all of us the students predicted that the cart...
2. Need help with isotopes: Chemistry!

1. Homework Statement Sulfur has 4 naturally occurring isotopes: Sulfur-32 Abundance = 95.0% Sulfur-33 Abundance = 0.76% Sulfur-34 Abundance = 4.22% Sulfur-36 Abundance = 0.014% Sulfur's symbol is S, it has 16 electrons and a mass of 32.06g 2. Homework Equations I'm actually...
3. Chemistry Chemistry regarding moles!

1. Homework Statement How many moles is 34.8 of sodium hypochlorite ? 2. Homework Equations 34.8g (1mol/____g) = ______mol 3. The Attempt at a Solution 34.8g (1mol/58.44g) = 2033.712mol Not quite sure if this is how things work, hopefully you can give me a few hints.
4. Speed problem

1. Homework Statement I have to find the speed needed to push a cart on top of a hill and I only have the height as a number. 2. Homework Equations A boy places his matchbox car at the top of the track he has set up with his brother. If the track starts atop the 55 cm toy box, descends...
5. Car & Gasoline

1. Homework Statement How does the amount of work done on an automobile by its engine relate to the energy content of the gasoline ? 2. Homework Equations How does the amount of work done on an automobile by its engine relate to the energy content of the gasoline ? 3. The Attempt...
6. Test tomorrow need help

I'm taking chemistry in my sophmore year, I need help with writing names or chemical formulas, to be honest I don't know anything whatsoever. For example: HOW can I possibly know that Calcium Selenide would be CaSe in chemical formula Or that (NH4)2SO4 is ammonium sulfate ?????????? I...
7. Need help with homework

Okay here is my question.:shy: If Total Energy should be constant, because the loss in Potention energy should equal a gain in Kinetic Energy, where does the missing total energy go to ? Here is my data; TOTAL ENERGY: MISSING ENERGY: .1254...