Recent content by Ryo124

Never mind, I solved it. I solved for her force parallel to the plane, F[SIZE="1"]||, and set that equal to ma. Then, I solved for a. Then, I used the equation: V=V[SIZE="1"]o + at to solve for t. However, when I solve for t in the above equation, I don't get why her initial...

I keep getting 5.02 sec. That's not right. The answer is 10.0 sec. Can anyone walk me through this to show why this answer is correct?

A skier with mass 65.9 kg is going 14.9 m/s on a flat surface. She hits a slope with angle 8.7 degrees from the horizontal. How long does it take for her to stop? Neglect friction. I've tried breaking up her velocity into components. Also, found the force on her once she is on the slope with...

Any undergrad engineering major is going to teach you a little physics. But that's the point that everyone is trying to make, a little physics. I would not suggest getting an undergrad degree in engineering and than getting a masters in physics, again, not unless you want to study and teach...

I love xkcd.com. Great science and math comics.

I would agree. If you are planning to get a masters in physics, why wouldn't your undergrad major just be physics? What career are you planning for?

All objects, regardless of mass, exert equal and opposite forces. So yes, it's Newton's 3rd Law.

It's because of F=ma. Depends on mass of the object, a1 = a2 so... F1/m1 = F2/m2. The forces can be different, so long as the masses of the objects balance the equation.

Not a joke, but a "mind-boggler": Three brothers go to a restaurant, have a meal and get the bill. The bill is $25, so with no even change, the brothers hand the waiter $10 each. The waiter gives each brother $1 back, and keeps $2 for himself. So each brother payed $9 ($27), and the waiter...

Get the Resnick/Krane book? I think I'll just get the book that my class recommends and I'll check out alternatives if it doesn't "cut it". :wink:

Alright, thanks for the help and the unneeded criticism. I looked at my schedule for next semester and it recommends getting the book: Fundamentals of Physics Extended by: Resnick. The same one that you recommended Flashgordy, thank you! I suppose I'll pick up the solutions manual as...

Hello, The current coursepack that was recommended by our professor just isn't cutting it. It explains the basic concepts of general physics very well (up to nuclear fission/reactions). However, it does not do a very good job explaining the mathematic problems in physics. I am looking for...

Thanks guys, sorry I had to PM ya, but I thought with such a nicely written question (in my opinion) I would get a quicker response (guess it was still pretty quick). I knew I had to divide "A" by "A" to get a number, so that is what I was working towards, it makes much more sense now...

If you have nothing that "speeds up" the coaster car at the bottom of the first hill, than no it is not possible. If you do have something that speeds up the car at the bottom of the first hill, than it is possible. At the top of the first hill, assuming the coaster is not moving, all energy is...

Homework Statement a - How many fission reactions would occur in 1 year of running of a nuclear reactor if the average power of the reactor is 778 MW? b - How many kilograms of U-235 would be needed to run the reactor for 1 year? c - What is the total change in mass for 1 year of running...