Recent content by nweis84

1. Help with Oscillations Problem

Sorry I'm still very confused, how can we find omega or t or A or B from any of the given information? my book just doesn't explain at all how to handle this type of problem and also thats the first time I've seen an equation written that way I have seen the x(t) = Acos(w*t) and the...
2. Help with Oscillations Problem

Homework Statement A 253 g oscillator has a speed of 89.28 cm/s when the displacement is 2.79 cm and a speed of 70.95 cm/s when the displacement is 6.56 cm. What is the oscillator's maximum speed? Homework Equations The Attempt at a Solution well, I haven't really attempted a...
3. Improper integrals with infinite discontinuities

thanks for your help It's just been a while since calc I and i kinda forgot how to do limits and yes one of the answer choices is that the integral diverges
4. Improper integrals with infinite discontinuities

well doesn't the 8- with the negative sign to the right of the number mean +8 but that it is approaching from the left side? or are you saying that it means I should have plugged in a negative 8 for a? or does that mean that that factor goes to infinity?
5. Improper integrals with infinite discontinuities

its the same basically for the other side
6. Improper integrals with infinite discontinuities

lim as a --> 8- [ \frac{-13}{x-8} ] from 7 to a = [\frac{-13}{(a-8)}+\frac{13}{(7-8)}] [ 0 + \frac{13}{-1}] = -13
7. Improper integrals with infinite discontinuities

both of them came out to -13
8. Improper integrals with infinite discontinuities

then don't you just add them in the end?
9. Improper integrals with infinite discontinuities

I'm not really sure how to write it in there with this program but I did take the limits individually when I did the work on my paper. The first bracket is the limit from 7 to a as a approaches 8 from the left and the second bracket is the limit from a to 9 as a approaches 8 from the right. Did...
10. Improper integrals with infinite discontinuities

Homework Statement \int\frac{13}{(x-8)^2}dx Homework Equations it is integrated from 7 to 9 and i am aware that there is an infinite discontinuity at x=8 so we have to take the limit from both sides individually. The Attempt at a Solution The only thing I can think that I might...
11. How much torque must the pin exert to keep the rod from rotating?

yeah thank you i did forget to multiply by the acceleration constant g
12. How much torque must the pin exert to keep the rod from rotating?

Homework Statement How much torque must the pin exert to keep the rod from rotating? (L=1.011m , M=3kg , m = .301kg) So I am guessing the point of rotation is the pin?? But then how does the pin exert any torque if it is at the point of rotation? I'm not quite sure there is a...
13. Gravitational forces

I have this problem i have been trying to solve and can't seem to get it right. The question states: The space shuttle is in orbit 396.9 km above the surface of the earth. What is the gravitational force on a 0.64 kg sphere inside the space shuttle? mass earth = 5.98x10^24 kg radius of...
14. Trigonometric substitution

no i've not tried that one yet thank you!!
15. Trigonometric substitution

I’ve got this tricky trig substitution that I’ve been trying to do as for my Calc II class. I think that I’ve done the substitution part right I just have no idea where to go from here. I’ve tried many routes including integrating by parts as well. Please help me thank you...