PDA

View Full Version : Please help - exam tomorrow(2nd set)


matt4u
Feb25-10, 11:16 PM
1. The problem statement, all variables and given/known data
A positively charged plate is help 5.0 cm above a negatively charged plate. The potential difference between the two plates is 500 MV. A negatively charged object of mass 3.00 grams is plaved on the bottom plate. If the object has a total charge of 100 million electrons, what is the speed at the top? (you can ignore gravity)

question 2. The electric potential in a region of space is given by V = by/(a^2+y^2). Calculate E

thanks a lot in advance

matt

2. Relevant equations



3. The attempt at a solution

tiny-tim
Feb26-10, 06:13 AM
Hi matt4u! Welcome to PF! :wink:

Show us what you've done, and where you're stuck, and then we'll know how to help! :smile: