Recent content by CanadianEh

I am totally lost with this one... please explain if you know how to do it. Two 5000-kg freight cars roll toward one another (one at 1 m/s and the other at 2 m/s) on a level track. Thus before they collide one car's kinetic energy is 2500 J and the other's is 10,000 J. They collide and...

Thank you very very much! :smile:

Refraction of sound is a term that refers to the fact that... A. sound bounces off a smooth surface just as light bounces off a mirror. B. different parts of a wave front travel at different speeds. C. different frequencies of sound waves travel at different speeds. D. sound waves only...

I need help with this problem, i am totally lost. See attachment. Please explain.

Hi there, I have a multiple choice quiz that I completed for my physics class and I'm looking for confirmation on whether I'm correct or not. 1.The centre of mass of an object... A. Must always lie outside the object, at a point where there is no mass. B. May lie outside the object, at a...

Ohh, it increases right? So for question 1, The centre of mass of an object may lie outside the object, at a point where no mass is. Question 2: Consider a ball on the end of a string being whirled in a horizontal circle. The horizontal force acting on the ball points inwards, towards the...

I understand now, so the answer would thus be "B" because it sometimes can be outside of the objects mass? Are my other assumptions correct? Thank you very much for all your help Cryphonus :smile:

So based on the different experiments I did, I'm inclined to think that the answer for question #1 is C and the answer for question #2 is B and the answer for Question 3 is A. Are my assumptions correct?

I have 3 simple (for most people on this forum) multiple choice questions that I need help with. 1.The centre of mass of an object... A. Must always lie outside the object, at a point where there is no mass. B. May lie outside the object, at a point where no mass is. C. Must always lie...

Thanks so much, that's much more clear. So basically the answer for the first question is 63 J, the answer for the second is -63 J and the answer for the last one is 0?

Homework Statement - A book has a weight of 21N. It falls off the shelf on to the floor, 3 m below. The work done by the force of gravity is what? - A book has a weight of 21N. You pick it up off the floor, and return it to the shelf, 3 m above. The work done by the force of gravity is...

How many arrangements of the letters in the word mathematics begin with a vowel and end with a letter other than h? Please help!

Homework Statement I was giving a graph of a combined function and four different equations and I need to select 2 of the equations and whether the graph shown is of addition, subtraction, multiplication or division. F(X)= X and H(X) = COS X and the combined graph is F(X)*H(X). I need to...

Ok, so NO oblique asymptote, correct?

When a linear asymptote is not parallel to the x- or y-axis, it is called either an oblique asymptote or equivalently a slant asymptote. In the graph of X/Sin(X), there appears to be an asymptote at y=x