Recent content by cybernerd

Homework Statement I'm trying to study off an old practice midterm for my upcoming statistics midterm. The midterm is attached. Part One is the following problem: The effect of a new antidepressant drug on reducing the severity of depression was studied in manic-depressive patients at...

Homework Statement WHat is the molar enthalpy of neutralization of NaOH (aq) when 50.0 mL of aqueous 1.00 mol/L of NaOH (aq) reacts with an excess of 1.00 mol/L H2SO4 (aq)? Initial temperature of H2SO4 - 21.3 degrees celcius Initial Temperature of NaOH - 20.6 degrees celcius Final...

No, it listed it as a specialization under "Bachelor of Arts" and again as a specialization under "Bachelor of Science". http://www.registrar.uAlberta.ca/ro.cfm?id=306

Hello! I'm a few weeks away from being a high school senior, and I'm looking at going into Computing Sciences after high school. But when I checked out the website of the University I plan to attend, it listed Computing Science as both an Arts and a Sciences course. Why is this? Are there two...

Hi, I am currently a grade eleven student, aiming for a career in robotics. Ideally, I would like to one day for the Canadian Space Agency's robotics program or other scientific robotics programs; I am not looking to work with animatronics. Right now, I'm enrolled in the International...

Homework Statement Solve the following equation: (2sinx-1)(tanx-1) = 0 0<x<2pi The answers are listed as : pi/6, 5pi/6, pi/4, 54/4 Homework Equations I'm told the unit circle is used. The Attempt at a Solution I'm attempting to learn this from dijointed class notes for...

Homework Statement I am working on a physics project about karate, and I want to know how fast I would have to punch to break a practice concrete slab. I know that the slab requires 1900 Newtons to break. I also know that my arm has an approximate mass of 8.4 kg. I also know that my arm is...

CORRECTION: The charges are not equally charged. Apparently A has a charge of 3.08 x 10^-7. I am not given the charge of B.

Homework Statement I'm given a chart of Force vs Seperation with the following values: SEPARATION (m) 0.1 0.2 0.3 0.4 0.5 0.6 FORCE (N) 0.79 0.48 0.20 0.05 0.022 Where FORCE is the y-axis, and 0.1 corresponds with 0.79. I am not given any other values. All I know is...

I hope so, or we're getting into magic rather than physics...thanks for confirming this...

Homework Statement A 6 gram ball moving north at a rate of 3 m/s collides head on with an identical ball moving south at 2.0 m/s. The collision is elastic and the first ball moves south at 1 m/s. What is the velocity of the second ball? Homework Equations Law of conservation of...

It's apparently supposed to be a momentum equation...but I have to disagree with them there... Well, I suppose vf^2 = vi^2 + 2ad is worth a shot. Which gives me... Vi^2 = vf^2 - 2ad That works out to the right answer...but it doesn't look like it belongs on a momentum assignment. Thanks!

Homework Statement A 500g rock is thrown straight down from a bridge and hits the water 5.2 m below. If the rock strikes the water at a speed of 12.5 m/s, what was the initial speed of the rock? Homework Equations I'm not totally sure... The Attempt at a Solution I have no idea...

Hmm...that is strange...I really don't like the way that the question is worded. But that did help, thank you.

Homework Statement A 0.13 kg ball moves at a rate of 20.0 m/s at the point where it is 5.00 m above the ground. How much mechanical energy does the ball have with respect to the ground? Homework Equations Ek = 1/2mv^2 The Attempt at a Solution Ek = 1/2mv^2 Ek =...