Recent content by Kinermatics

Oh and biomedical engineering is out of the list just because I've read a b.s degree in biomedical engineering is pretty useless (usually one needs further education in grad school). Not only that but the biomedical engineering program in my school is not accredited.

Which engineering degree that makes a "difference" I don't mean to sound bias, but I have been contemplating which engineering major I should be. Ultimately, I want to be a doctor in the future. Please don't say doing engineering major as a premed major is bad, I'm not trying to graduate in 4...

oh so.. 0 = -m2*v2f*sin(theta) + m1*v1f*sin(75)? Minus sign just because it goes to the left right? And thank you!

Homework Statement Homework Equations m1v1i + m2v2i = m1v1f + m2v2f (Conservation of momentum) (1/2)m2*(v2i)^2 + (1/2)m1*(v1i)^2 = (1/2)m2*(v2f)^2 + (1/2)m1*(v1f)^2 (Conservation of energy)The Attempt at a Solution I separated the momentum into x and y components and got 2 equations I used the...

Homework Statement A hot-air balloon consists of a basket, one passenger, and some cargo. Let the total mass be M. Even though there is an upward lift force on the balloon, the balloon is initially accelerating downward at a rate of g/3. The passenger notices that he is heading straight for...

Oh nvm i think i got it. I think he meant to put that: 25N = Fy - 50 huh? Darn and to think i could prove a teacher wrong ;"D

Homework Statement Problem is in the picture Homework Equations The teacher told us the Fnetx = 20N - Fx (Fx is 0) Fnety = Fy - 50N (Fy = +25N) The Attempt at a Solution My answer was 32N. But my teacher said the answer was C. which was 77.5N. He got it because Fnety = 75N for...

I figured out #2! Thank you good sir!. You where right, I just forgot that the net force for y = 0 which made normal force greater :). I'll get back to you guys on #1 lol

Hmm it must be something I'm doing then because here are my attempts so far on #1: my mind is out of ideas of what the answer could be lol. need some help :"( and for #2 (taking into consideration SammyS' comment) i put fk (the box's friction force on the truck bed) toward the right because...

for #1 should the frictional force be the same length as the tension force? Cause when i put it in the direction towards the right (and your explanation made a lot of sense, thank you!) it counted it as wrong. and for #2 the mp counted the diagram wrong, so i guess there is something we missed?

labels for 1: nT = Normal Force wT = weight of truck f = friction force T = tension force labels for 2: nground = Normal Force nB = Reaction to the normal force on the box from the truck wT = weight of truck fk = the box's friction force on the truck bed fread = reaction force to tires'...

Homework Statement 1. A truck is pulling a car on a horizontal highway using a horizontal rope. The car is in neutral gear, so we can assume that there is no appreciable friction between its tires and the highway. As the truck is accelerating to highway speeds, draw a free-body diagram of...

I apologize if this is in the wrong sections. But you guys seem to know your stuff when it comes to physics and math. My question is, when you are doing physics or math related homework and you've stumbled upon a problem you can't seem to figure out... what do you do? My problem is that I want...