Recent content by angel_romano

I can't seem to figure out how to do this problem. I've tried the equation for coulomb's law, but I can't get the right answer. If somebody can just help me with setting the problem up. Two objects ar rubbed against each other. Object B gains a charge of -5 nano-coulombs. What is the...

But how does the angular acceleration fit in then? I have linear formulas, but I'm not sure which one I would use.

If a wheel accelerates from rest at 1.0 m/s^2 and I need to find the instantaneous angular speed of the wheel at .10s would this be the proper formula: final angular speed=initial angular speed + angular acceleration(change in time) When I use this formula, it comes out to .10 rad/s which...

If you throw a ball horizontally while standing still on roller skates, you roll backwards. Will you roll backwards if you go through the motions of throwing the ball, but hold on to it instead? And is it difficult for a fire fighter to hold a hose that ejects large amounts of high-speed...

In terms of impulse and momentum... In terms of impulse and momentum... why are padded dashboards safer in automobiles? why are nylon ropes, which stretch considerably under stress, favored by moutain climbers? why is it preferred that railroad cars be loosely coupled with slack...