Recent content by ccmetz2020

I got just 4XY, but I don't see how I can get 4X(dot)Y from that? Is there a way to say that 4XY = 4X(dot)Y? Thanks again for the help.

Oh wow, I definitely wasn't thinking straight. Thanks guys, I expanded it and got 4XY. Well that was a lot easier than I thought...

Homework Statement Prove that |X+Y|^2 - |X-Y|^2 = 4X(dot)Y using general properties of vectors. Homework Equations ? The Attempt at a Solution I'm very confused about how to start this. If someone could give me some help to just get me started then that would hopefully get...

Homework Statement Okay I've been scouring the internet for an hour now and cannot find the answer for the life of me. Which of these solutions turn purple when NiCl2 is added to it?: Ammonium hydroxide Sodium carbonate Potassium thiocyanate I can't find any ions in these solutions...

Awesome guys! I'll have to read up on some of this stuff! Thanks for the replies!

If a force is exerted on the Earth by the moon, how come the Earth doesn't move? I don't get how this works with F=ma because shouldn't there be some acceleration caused the moon exerting an equal and opposite force on the earth?

Homework Statement A sled weighing 100 N is held in place on a frictionless 20 degree slope by a rope attached to a stake at the top. The rope is parallel to the slope. Use the FBD diagram of the sled below to answer the following. What is the correct formula in both the x and y direction...

Microbiology major for pre-med? I just have a quick question for you guys. I have recently been accepted to the University of Iowa and I picked to major in Microbiology. Would this be a good major for someone who is considering going to med school? Are there any pros and cons? Thanks for any...

I don't understand why people come here for vocab definitions. You know you can look that up on google in like 5 seconds so why even ask us? If you have a science question involving mathematical equations, etc, it would make more sense to post it here.

For part A: Find out how moles of Cr2S3 are in 439 g and the answer is how many moles of Cr2O3 because the mole:mole ratio is 1:1. For part B: Calculate how many grams of Cr2O3 are in your answer to part a

Nevermind. It was a trick question, nothing is being oxidized. It isn't a redox reaction!

1. A solution of nickel nitrate is added to a solution of lithium sulfide. (you MUST write as a Net Ionic if appropriate). a. BALANCED EQUATION b. Which substance is being oxidized? 2. none really 3. I don't really have much of an attempt because it doesn't specify in the question...

Hey guys, recently I have been really interested in space and physics, so I was thinking about majoring in astronomy or physics. If I went down that path, I would probably end up being a prof and doing research at a university. However, I also use to have a big interest in biology and...

Hey guys, I'm new here. I have pondering about doing a major in Applied Physics with a concentration on medical physics. But, I need an explanation for what medical physics is exactly. What is a common job for medical physicists to do? How do they use physics in their careers to solve problems...