Recent content by Tanya Back

Hey Guys! I am really stuck on this questions: The medians BD and CE in triangle ABC are produced to X and Y respectively so that BD=DX and CE=EY. Prove that X,A, and Y lie in a straight line. I tried this question, it made no sense to me...i drew the picture and i named the interesting...

OHHHHHH! opps ...i meant to write Fg + 150cos68= Fn so it's like 174 + 56 = 230... Thank u sooo Much !

Oh.. Yah i drew the free-body diagram..and i got something like this --> its like Fgcos22 + 150cos68 = Fn

ohh k ...so Fg + 150 = Fn ?

Hey I am having trouble doing this question--> A gardener exerts a force of 150 N [ 22 degrees below the horizontal] in pushing a large 18 Kg box a distance of 1.6 m. The coefficient of kinetic friction between the box and the floor is 0.55. Question --> Use Newton's law to...

Hey Guys! i was wondering what would be the bond angle of FXe2..would it be 104.5 or 90? thanx Tanya

What is the bond angle for Xe- F- Xe ?..is it 104.5? Tanya

Oh Silly me! Ionic bonds are polar bonds.. opps!

Vsepr Theory Hey Guys! How are u guys doing today? I was wondering how do we know dat BeF2 is polar?..i drew it out by using the VSEPR theory..but what confuses me is dat BeF2 ionic..can we still use VSEPR theory to draw it out? Tanya Thank you in advance! :smile:

Thank u Diane Ohhhh now i see! Thank u Diane :biggrin: Tanya

Hey! I tired this question but i don't get it :frown: A 100 kg pilot sits on a scale, as the plane reaches the bottom of the loop, what does the scale read? The plane is traveling at 138.88 m/s. The radius is 200m So i did this --> Fc= Fscale - Fg (100)(138.88)^2 / 200 =...

Thank u guys! I understand much better now..i wish i had asked this question before the test ..oh well.. anyways Thank u Tanya

Does straight lines have slopes of tangent? Does straight lines have slopes of tangent?.. :confused: i had no clue when this question came on a test..so i just left it...do they?..i just thought maybe they didn't since they have no limit. Hope i get an answer for this question. Tanya

Hey Guys! I need ur help with this question, this question is like an incline with a pully..so we have puck which is on an incline surface, and the puck ( mass of 0.5455kg) is attached to a string which is attached to a pully, which also has a string attached to a mass of 0.05 kg. Acceleration...

WOW same here..i am having a test on friction/forces very soon too! and i also got a teacher dat sucks!