Recent content by 2much

I have an equation relating potential energy1 plus gravitational energy1 = potential energy2 plus gravitational energy2 1/2 mv21 + mg1 = 1/2 mv22 + mg2 Now cancelling out the terms I have v21 + 2gy1 + v22 2gy2 Now I don't understand why mg in the second term of both expressions don't cancel...

I did have mv in the final equation, just forgot to mention it there. Still didn't give me the answer of 1.3x10^-2 m/s2

Homework Statement We are given the mass of the sun, ms = 1.99 x 10^30 and the mass of the venus, mv = 4.83 x 10^24. The distance from each other radius is r = 1.08 x 10^8. What is the centripetal acceleration? mv = 4.83 x 10^24 kg ms = 1.99 x 10^30 kg r = 1.08 x 10^8 km G= 6 67x10^-11 N m2...

Sorry, a better question is why is area equal to flow / velocity and since 1 L equals 1dm wouldn't 1L equal to 10cm? So than why do we have r as 0.1? velocity = (2/30)/(3.14*0.01^2) = 212.2m/s Oh i see you are converting 1cm into dm. I still can't grasp how area = flow / velocity?

Thanks, that makes allot of sense.

Homework Statement A hot air balloon experiences an acceleration of 110 m/s2 [down]. The total mass of the balloon is 315kg What is the buoyant force of the system? aballoon = 110m/s2 agravity = 9.8m/s2 mtotal = 315Homework Equations Fgravity = 315 * 9.8 = 3087 Fnet = 315 * 110 = 34650The...

Yes, but as I said earlier I can get up until 0.35 - m g / 0.15 = m I can't successfully eliminate the LH m. I tried dividing and adding it to the RH

I can get up until Fapp - m a(gravity) / a(applied) = m Now I am a bit confused on my next move. Is this right so far? Since m on the left is being multiplied by the acceleration of gravity I think I should divide to get rid of it. But once I do the right side would cancel out to zero.

Wouldn't I need the mass of the fork (m) to calculate the force exerted by gravity?

0.35 Fg = m .15m/s2 0.35 - (m 9.8 m/s2) = m 0.15ms2 The second law says that if the net force is not zero there is an acceleration in the direction of the force.

The net force would not be zero and I am only given the applied force. Without a mass I don't know how I can get the force of gravity. So as far as I can tell I have .35 Fg = m .15m/s2

Homework Statement You apply a force of .35N up to lift a fork, the resulting acceleration is .15m/s2. What is the mass in grams. Please help I don't know where to start with this simple question.

Interesting. I didn't know it would be that difficult. So if I pursue a physics degree in either astronomy or particle physics my best bet is to be a teacher eh? I definitely don't want to teach. I have some thinking to do. Any advice on programs to look into with physics/advanced functions and...

So I am 20 years old and a recent college drop out. I was taking computer systems technology and decided during second year that it was not something I wanted to pursue as a career. As of right now I am taking night school courses for both advanced functions and physics at the 12U level. I...