Recent content by einsteinette

HI, So say you have a small ball hanging vertically below a positively charged plate. When the ball is released from rest with the string at a small angle to the vertical, it swings in periodic pendulum motion. If the ball is now positively charged, does the period increase, decrease or stay...

Hi, I'm having trouble rearranging this equation, solving for E(t): E(t) = Eo*e^(-t/T) My attempt: ln E(t) = Eo * (-t/T) and now I'm stuck. Any help would be appreciated!

Ahh so you mean work done is the same. I think I get it now. Thanks!

The force applied and the rate of deceleration?

Hello there, I am having difficulty with this question: A 0.2 kg plastic cart (Cart a) and a 20 kg (Cart b) lead cart can both roll without friction on a horizontal surface. Equal forces are used to push the two carts forward for a distance of 1 m, starting from rest. Which cart has the...

Thanks, good to know that I make sense.

Hello, just wondering if you could apply Fg=mg to this. So the gravitational forces on the equator versus on the North Pole would differ and therefore, you would weigh more on the North Pole. According to what I found, the the gravitational acceleration is 9.78 m/s2 at the equator and 9.83 m/s2...

Ahh! Ok thanks! I get it now!

Hello there, I am having trouble with this question: A seal, mass of 82kg, jumps onto a horizontal ice float with a Vo of 6m/s i. The friction between the seal's belly and ice is 160N. g is 9.81m/s^2. How far does the seal slide? So so far, if I'm correct, I calculated the acceleration...

Homework Statement Rearrange d=vit + 1/2 at^2 for t. The Attempt at a Solution t = \frac{-v \pm \sqrt{v^2+4 \left( \frac{1}{2} a\right)d}}{2 \left( \frac{1}{2} a \right)}

Ah, ok, thanks. It's the second one.

1. The problem statement. a = 1/(1+C) g sine pheta Rearrange equation to solve for g. My attempt of the solution is: g = (a+c)/sine pheta What confuses me is whether or not g sine pheta are all clumped together or if it's just g x sine pheta. Thanks!