Recent content by chris_0101

Homework Statement A bookstore has a draw for a $25 book certificate. Each customer draws a ticket from a bowl of 100 tickets. Only one of the tickets is a winning ticket and once the certificate is won, the draw is over. If the tickets are drawn with replacement, what is the probability...

This is what I got: (u'^2 + 2u'v + v^2)/((u'^2 v^2)/c^4) + (2((u'v)/c^2) +1 Is this right?

yea, but how does one multiply out the numerator? do you mean like this: (a/b)/c = (a/b)*(1/c)

I'm not sure what you mean by "multiply out the numerator of that mess over c^2"?

Homework Statement I need to show how the first equation gives the second equation algebraically Homework Equations I've tried multiple methods such as rationalizing the denominator with no avail. The Attempt at a Solution Any help will be greatly appreciated, Thanks.

Homework Statement Consider the image and assume that the switch has been open for a long time. Note that the switch is supposed to be between the battery and the resistor on the top straight segment, which is not shown in the image...

Homework Statement Two trains leave a station, one going westbound and one going eastbound, both on the same track. A passenger who just wanted to get out of town missed both trains and, while standing on the platform at the edge of the track, observes the westbound train to be receding at 0.6c...

I hope this is in the right sub forum, but my question is simple. What type of mindset is required to complete problems in a 2nd year classical mechanics course. Comparing a typical classical mechanics problem to a 1st year physics problem, they are both completely different. I find that a...

Wait, how can air resistance increase acceleration when going up. From what I have understood, air resistance slows down the object flying upward, likewise with gravity. I do understand that I have to break up the question into the upward and downward parts, but the question asks for the speed...

Homework Statement A sphere of a mass m and radius R is fired straight up with a speed v0 a) What is its speed when it hits the ground (Include quadratic air resistance but ignore linear air resistance b) Evaluate the result for part (a) with R = 0.2c, v0 = 1.3m/s and m = 100mg I am...

thanks for the tip, I managed to solve the question.

Homework Statement Hi, I am having a bit of trouble visualizing the process of the following integral: ∫dx/(1-x^2/a^2) The answer to this would be: atanh-1\frac{x}{a} if someone could show me this, that would be greatly appreciated. Thanks

Homework Statement Find c such that fave = f(c) c1 (smaller value) = ? c1 (smaller value) = ? f(x) = 6x/(1 + x2)2 Average value (i.e. the integral) was found to be 12/5 Homework Equations 12/5 = 6x/(1 + x2)2 The Attempt at a Solution 12/5 = 6x/(1 + x2)2 12/5 =...

So I would get: a_c = ((2t)^2)/R So I have both tangential acceleration and centripetal acceleration. So I can proceed by substituting it into the equation: tan(theta) = a_c/a_t And I think I got it from this point now. a_t and v_t are pointing in the same direction so the above equation...

magnitude of tangential acceleration is simply the derivative of the tangential velocity, which is 2m/s^2