Question

In: Physics

If you go to a crafts store and buy “glitter beads,” you get a little plastic...

If you go to a crafts store and buy “glitter beads,” you get a little plastic tube of tiny, metal covered glass or plastic beads. On a nice dry day, you can get a charge on the beads, and some of them will “hover” in the air inside the tube, maybe 4 mm apart from each other. It’s pretty cool.

A. To make it even more cool, let’s estimate how much charge there is on a bead. For that, let’s just assume there are only two beads, one under the other, and it’s the electrostatic repulsion that’s holding the top bead up. If the beads are 4 mm apart, they each have a mass of about 0.1 grams, and we can assume they have the same charge, about how much is that charge?

B. If the amount of the charge on the beads were to drop by 1/2, what would you expect to happen to the distance between them?

C. And how much of a difference in the mass of a bead does that amount of accumulated charge make? That is, how much more or less mass does a charged bead have than a neutral one?

Solutions

Expert Solution


Related Solutions

You are the financial analyst at SewMart, an arts and crafts retail store. Your boss has...
You are the financial analyst at SewMart, an arts and crafts retail store. Your boss has asked you to review the company's financial results for the past three years and to provide an analysis of your findings: SewMart Ratios 20x9 20x8 20x7 Sales trend 16.7 22.1 25.1 Current ratio 0.78 1.90 2.20 Acid-test ratio 0.40 1.32 1.90 Accounts receivable turnover 41.29 33.20 10.60 Inventory turnover 3.58 6.25 7.80 1. Has your company performed worse, better, or about the same? 2....
For homework, Go to the store, and get current prices for items listed below..( I know...
For homework, Go to the store, and get current prices for items listed below..( I know the CPI index is for 2014 and we are in 2015, but we are going to call it "close enough.") Then you will be able to determine if there has been inflation for that particular good. Simply put your prices and year in the bookmarked inflation calculator and it does the work for you. For example, in 1963 an Easy Bake Oven cost $15.95....
So, you go into a Best Buy and you want to buy these wonderful, sparkly gadgets...
So, you go into a Best Buy and you want to buy these wonderful, sparkly gadgets called phones. These phones require a signature where you are agreeing to pay a certain amount each month depending on the phone that you like and it gets added onto your contract. You are a 17 and a half year old who just got a job at Chipotle. You are so excited and you want to use your paycheck and sign up for the...
A local department store is having a BOGOHO (Buy One, Get One Half Off) sale. The...
A local department store is having a BOGOHO (Buy One, Get One Half Off) sale. The manager wants a program that allows salesclerks to enter the prices of two items. The program should calculate and display the total amount the customer owes. The half-off should always be taken on the item having the lowest price. If the items cost $24.99 and $10, the half-off would be taken off the $10 item. If both prices are equal, take the half-off on...
Suppose you are buying an $80,000 car , you decide to buy it and get it...
Suppose you are buying an $80,000 car , you decide to buy it and get it financed and make monthly payments.Your budget is $3,000 for monthly payments, and you can get financing at 11% APR. With the help of an amortization table, show approximately how long will it take you to pay the loan back? Remember the monthly payment must be around your budget. Work with Excel. Copy and paste the first four months and last two months of the...
When you go in for a cancer screening, they are not always correct. Sometimes you get...
When you go in for a cancer screening, they are not always correct. Sometimes you get screened for cancer and the initial results come back that you do not have cancer when actually you do have cancer (false negative), or maybe on your initial cancer screening you get tested positive for cancer but then actually you don’t have cancer (false positive). You could display this as a hypothesis test and the false positive and false negative are a Type I...
1) If you allowed your distillation to go a little longer than you did, how do...
1) If you allowed your distillation to go a little longer than you did, how do you think the composition data would change? 2) In theory, fractional distillation should give better separation than simple distillation. Does your data support this expectation? Suggest why or why not.
You go to Verizon to buy a new Iphone. You expect to pay $800 for a...
You go to Verizon to buy a new Iphone. You expect to pay $800 for a new phone and $70 a month. But this is not the only option. Option 1: Pay $800 for the phone and $70 a month. Option 2: Pay $200 for the phone and $90 a month. Clearly if you stay on this plan for only a short time option 2 is cheaper. you stay on the plan long enough, option 1 is cheaper. In order...
You need 100.000   € to buy a flat. So, you go to the bank and ask...
You need 100.000   € to buy a flat. So, you go to the bank and ask for that amount. The bank offers an annual interest rate of 8%, and the loan has to be paid back in 5 years, in quarterly payments, so 1 payment every 3 months, frequency times per year, and by using the American system. Calculate how much you should pay to the bank every quarter.
When you buy a condo or a coop you get a deed. The future value of...
When you buy a condo or a coop you get a deed. The future value of a $1 annuity compounded at 5% annually is greater than the future value of a $1 annuity compounded at 5% semi-annually. Due to statue of frauds all contracts and leases over one month must be in writing True or False please help
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT