Recent content by loka

u=initial velocity v=final velocity A=1 B=2 Given: M1 = 2275 kg M2 = 1525 kg d = 3.705 m angle = 47 deg coeff. of friction = 0.80 ---- Q1: Is the final velocity when it stopped or during the 'skidding time'? But one thing is for sure...it's the same for both of them and it's...

Homework Statement On May 19, an accident occurred at the corner of two asphalt streets with no stop signs. The speed limit was 40 km/h on both streets. As lead CSI on the case, you must determine whether one or both cars should be ticketed for speeding, which car had right of way at the...

Oooo that makes more sense...thanks for rephrasing it! maybe I was just complicating the question... Thanks again for your help. ^^,

but am i not just proving what was already stated in the question? Which is that radius and speed don't rely on mass? I'm just terribly confused of the question...shouldn't I incorporate N1 in my conclusion but I just don't seem to get it...

I cannot thank you enough! I'm starting to love this forum! ^.^

so just to double check...do i just divide q by the charge of an electron? so... +/- 2.80 x 10^-8 divided by 1.602 x 10^-19 = +/- 1.75 x 10^11 ?? is that how u do it?

Homework Statement A hammer slides 21 m down the side of the roof inclined at 60 deg. above the horizontal, and falls down to the lawn 11m below the edge of the roof. How far away from the wall will this hammer impact with the lawn? m = 1 kg mu = 0.23 Homework Equations...

Thanks again for the fast reply...the thing is that the second part of the question is asking me to calculate the deficit or excess electrons...?

...oopz, clumsy me! thanks ^^ ...here's a diagram provided... so how do we know if it has deficit or excess electrons? I thought if u get a positive charge then it has deficit and excess if negative...?

hmmm ok...so Fc = mv2/R Ff = mu*Fn = mu*mg Fc = Ff mv2/R = mu*mg so the masses cancel out? ...the thing is I don't even get what the question is asking?

Homework Statement Two blocks, of mass M and m, are in contact on a horizontal, frictionless table (w/ the block of mass M on the left and block of mass m on the right). A force F1, is applied to the block of mass M and the two blocks move together to the right. a. Draw a FBD b...

Homework Statement The Mass of an object doesn't affect the angle at which a curve must be banked. The law of inertia, however, states that the motion of any object is affected by its inertia, w/c depends on its mass. How can objects rounding banked curves obey the law of inertia if the...

Thanks for the quick reply! ^^ Ok...so I just want to ask if it's right to assume that both pithballs have the same charge? Is what I did here correct? Fe = mg*tan 14 = (2) (9.8) (tan 14) = 4.89 N q = square root of (F r^2 / k) = square root of (4.89*(0.038)^2/ 9*10^9)...

Homework Statement A charged pith ball (mass = 2 g) is brought close to an identical, equally charged pith ball that's suspended from a thread. When the pith balls are 3.8 cm apart, the thread sits in equilibrium at 14 degrees from vertical. What's the charge on each of the pith balls...