Posted by **Sandra** on Saturday, February 6, 2010 at 1:24pm.

Hi, O tried this question, but I'm getting an answer of 0.99 which rounds to 1, but it was not given as one of the answer choices...can u tell me where I'm going wrong?

What I did was used the following simplified formula:

Volume*density*g =q*E ; where I solved for q.

Then I divided q/e(elementary charge) to find the ratio..

In Robert Millikan's experiment a constant electric field along the vertical axis is obtained with two charged plates, one located above and on below the experimental set-up. The electric field is directed downwards. An oil drop of radius 1.48 μm and density 0.81 g/cm3 is levitated in the chamber when an electric field of 1.7 x 105N/C is applied. Find the charge on the drop as a multiple of the elementary charge e.

the choices were:

2

3

4

5

6

## Answer This Question

## Related Questions

- Calc-Math - y^2+xy-3x=-5 dy/dt=-4 x=3 y=1 find dx/dt. i tried doing 2y(dy/dt)+...
- Math - Hi I wanted some help with this question, I don't want the answer though ...
- alg. - Find the slope of the line passing through the points (–2, 1) and (3, 9...
- Math - Hi, I am getting very frustrated. I am doing an online homework for ...
- Algergra - I am stumped! I have been working on these problems for the longest ...
- Math - 1.2 (1+ 23.0 x 10-6/°C*50) Could someone solve this problem for me and ...
- Statistics - Over time, a student analyzes her ability to guess correctly after ...
- Algebra - Write y = -2/5x + 3 in standard form using integers. A)2x+5y=-15 B)2x-...
- Math (putting the question back up, again) - - 5/8c = 20 Answer choices: 34 . -...
- Integration - 1. [integration] (3x+7sin(x))^2 dx i tried 3 different methods of ...

More Related Questions