Recent content by PaintballerCA

Another formula that you will need is \epsilon= [l(final)-l(initial)]/l(initial)

I think I figured out the problem, one sec... Ok, I get 3.79 m/s. Is this correct? If it is, then I am pretty sure that I know what you did wrong and why all the other methods you used gave you the same answer.

I think the answer is 3.79 m/s

N=mgr is incorrect. Write out the units for that equation and see what you get. What units do you need? I suggest you draw your free body diagram in Microsoft paint or something so that you can post it. This type of problem becomes extremely simple with the correct free body diagram.

http://hyperphysics.phy-astr.gsu.edu/Hbase/geoopt/image2.html#c1 "Although a virtual image does not form a visible projection on a screen, it is no sense "imaginary", i.e., it has a definite position and size and can be "seen" or imaged by the eye, camera, or other optical instrument."

hmm. I am thinking of writing the force between the two charges and integrating it over the distance.

Work is defined as F*ds. Look at the equations you used and the units they give.

Have you joined ASME? Going to events in your area (which they will inform you about) can help. Remember, it is all about networking!

How many unknowns do you have? How many equations do you have? The above system of equations is very solvable.

Think about it step by step. You know the final and initial velocity right? You know how long it took to get from the initial velocity to the final velocity, so what equation do you think you need to use? What do you need to solve for? How does this relate to the force of friction? What is a...

Read up and see if this helps. http://hyperphysics.phy-astr.gsu.edu/Hbase/geoopt/lenseq.html

Draw the free body diagram for the ball hanging from the ceiling at an angle of 30 degrees. Since it is not moving, it is a statics problem, and you know that the net force on the ball is... Once you have all your forces, break them into their components.

No one will show you, but we will help you along it deriving it yourself. How can you model harmonic motion? What function would you use?

What do you know about the velocity in the x direction and in the y direction? If you have velocity and distance covered by the object, what else do you know about that object? You know how fast the object is going in the x direction and how far it goes, so you can solve for time correct...

The equation you have is a simplified one in that it assumes that they are perpendicular. So, what do we know about things that are perpendicular? This equation implies that when they are perpendicular, the voltage is at its maximum. When thinking about perpendicular and maximum, what comes to...