Recent content by 5.98e24

  1. 5

    Conservation of energy, speed before case hits spring

    Not that either... :(
  2. 5

    Conservation of energy, speed before case hits spring

    Nope. :(
  3. 5

    Conservation of energy, speed before case hits spring

    Homework Statement A 12.9 kg case of bottled water is released from rest down a shipping ramp inclined 27.2° to the horizontal. At the base of the ramp, oriented parallel to its surface, is a spring that can be compressed 2.12 cm by a force of 280 N. The case of water moves down the ramp and...
  4. 5

    How Does Doubling Mass and Force Affect Acceleration?

    Ah, I see now.. forgot to consider the doubling of the forces. Thank you both!
  5. 5

    How Does Doubling Mass and Force Affect Acceleration?

    Homework Statement Two rubber bands stretched to the standard length cause an object to accelerate at 2 m/s^2. Suppose another object with twice the mass is pulled by four rubber bands stretched to the standard length. The acceleration of this second object is: ?? The correct answer is...
  6. 5

    Friction acting on box not slipping in truck

    Sorry for not using the proper post format. I'm typing on my phone and the post template doesn't show up. Question: a box is sitting in the back of a truck which accelerates forward when a traffic light turns green. Which of the following statements is correct if the boxdoes not slip? The...
  7. 5

    Dividing a number w/uncert by a number w/o uncert

    Homework Statement If I have a number with an uncertainty and I want to divide it by a number without an uncertainty (ex. if it's just a constant, like pi), what do I do with the uncertainty? Is it ok to just divide the uncertainty by that number? ex. (4.05 +/- 0.3) / 3 Do I divide the 0.3...
  8. 5

    Finding displacement+distance from a v-t graph

    The reason why I'm asking about not using integration is because I wasn't given the equation of the graph.
  9. 5

    Finding displacement+distance from a v-t graph

    I see. Is there a way to do it without integration, though?
  10. 5

    Finding displacement+distance from a v-t graph

    Homework Statement This is just a general question. When you have a velocity-time graph, I know that the area under the graph is the displacement. How about the distance? It's not the same as the displacement value, is it? Homework Equations n/a The Attempt at a Solution I'm...
  11. 5

    Effect of an uncharged sphere touched to charged sphere

    Creative, but no :) Nice try though !
  12. 5

    Effect of an uncharged sphere touched to charged sphere

    Be my guest! Ah right! I forgot about that. They're 10cm apart and attract each other with a magnitude of 3.0 x 10^-6 N. I don't think it matters though.
  13. 5

    Effect of an uncharged sphere touched to charged sphere

    I'm a her .. :) I did learn about induction, but that was a while ago. I haven't touched physics in a few years. Thanks for all the help! Greatly appreciated!
  14. 5

    Effect of an uncharged sphere touched to charged sphere

    The ones in my original question. There were only 2 to start with.
  15. 5

    Effect of an uncharged sphere touched to charged sphere

    What if there is no third sphere? Just two spheres?