Recent content by BbyBlue24

Thank you!

I am still having problems with this problem; I have a quadratic equation of 15^2=16t^2+4t^4, with the time equal to 2.4, but this is not the correct answer, please help, thanks!

I got it, thanks! I think that's all I have tonight, thank you very much!

Yes, thank you. Also thank you very much for helping me out with this problem and the rest of the problems I have had tonight!

I have; Vp/Va = Ra/Rp = 2289/459 = 4.99 km

These are the values that I entered into the equation, I think the V (volume) might be incorrect, I am using .004 (V=(4Πr^3)/3) ((1∙.004)-(.18∙.004)-4)9.8=(4+.18∙.004)a = -9.79 Thank you!

So that makes the upward acceleration -9.79?

Doing that I get (1)(9.8)(.004) = .0392...sorry I am not getting this at all

FYI: This isn't a homework problem, I am doing random problems throughout the book to prepare for an exam tomorrow. I have played around with equations of conservation of angular momentum and equations such as v=(2πr)/T and v=√(GMe/r)=√(GMe/Re+h). I tried using Vp=(Ra/Rp)Va, but I have...

I determined the weight to be 39.2 N. I used the formula B=ρgV = (.18)(9.8)(.004) = .007 and V=(4πr3)/3 = .004. Acceleration = Force/Mass = (.004-39.2)/4 = -9.799 And this answer doesn't make sense to me, I think my problem is with the buoyant force. Thanks!

Yes, a calculus based engineering course.

With this problem I figured the Acceleration = Force/Mass = 4i - 2tj. I tried using the equation velocity = at; 15=4i - 2tj which gives me a false answer and is where I am stuck at. Thanks.

The Explorer VIII satellite, placed into orbit November 3, 1960, to investigate the ionosphere, had the following orbit parameters: perigee, 459 km; apogee, 2289 km (both distances above the Earth's surface); period, 112.7 min. Find the ratio vp/va of the speed at perigee to that at apogee.

A thin spherical shell of mass 4 kg and diameter 0.2 m is filled with helium (density 0.18 kg/m3). It is then released from rest on the bottom of a pool of water that is 4 m deep. Determine the value of the upward acceleration of the shell.

The Explorer VIII satellite, placed into orbit November 3, 1960, to investigate the ionosphere, had the following orbit parameters: perigee, 459 km; apogee, 2289 km (both distances above the Earth's surface); period, 112.7 min. Find the ratio vp/va of the speed at perigee to that at apogee.