A 0.80-m-diameter oil droplet is observed between two parallel electrodes spaced 11 mm apart. The droplet hangs
Question:
A 0.80-μm-diameter oil droplet is observed between two parallel electrodes spaced 11 mm apart. The droplet hangs motionless if the upper electrode is 20 V more positive than the lower electrode. The density of the oil is 885 kg/m3.
a. What is the droplet’s mass?
b. What is the droplet’s charge?
c. Does the droplet have a surplus or a deficit of electrons? How many?
Step by Step Answer:
Model Assume the electric field E V d between the plates is u...View the full answer
Physics for Scientists and Engineers A Strategic Approach with Modern Physics
ISBN: 978-0133942651
4th edition
Authors: Randall D. Knight
Related Video
Density is a measurement that compares the amount of matter an object has to its volume. An object with much matter in a certain volume has a high density. Density helps us predict whether something will float. In this video, the density of oil is assessed by adding food color to the oil above water.
Students also viewed these Physics questions
-
A slope distance of 6704.511 m is observed between two stations A and B whose geodetic heights are 916.963 m and 928.578 m, respectively. The height of the instrument at the time of the observation...
-
A 1.0-m-diameter oil droplet (density 900 kg/m 3 ) is negatively charged with the addition of 25 extra electrons. It is released from rest 2.0 mm from a very wide plane of positive charge, after...
-
As described in Problem 7.77, the second step in tissue engineering is to seed the top surface of the scaffold with human cells that subsequently grow into the pores of the scaffold. A seeding method...
-
The Jasper SkyTram transports passengers to the top of Whistler Mountain in the Canadian Rockies where there are spectacular views, boardwalks, and hiking trails. The SkyTram travel time (in minutes)...
-
When you blow up a balloon, do you slightly warm the balloon? When air is allowed to rush out of it, how, if at all, does the temperature of that expanding air change?
-
On the last day of August, Broadway Company borrowed $120,000 on a bank note for 60 days at 10 percent interest. Assume that interest is stated separately. Prepare the following journal entries: (1)...
-
What is the objective of the Post-Mission Phase of Operation? How do we bound its starting and ending points?
-
Pleasant Co. manufactures specialty bike accessories. The company is known for product quality, and it has offered one of the best warranties in the industry on its higher-priced productsa lifetime...
-
What is Preferred Stock? Discuss the characteristics of Preferred Stock over Common Stock. MINIMUM ONE PAGE REQUIREMENT. 2. What are Stock Options? Discuss the TWO primary reasons why corporations...
-
A local Pilates studio recently began offering a monthly subscription service for its patrons. Suppose a particular patron at this studio has the following willingness-to-pay schedule, per session....
-
Ruiz and his two brothers founded a social club called the Last Snake Inn in 1996. They want to take advantage of a new state law that lets them serve beer, liquor, and wine to their patrons on...
-
Identify the element, the isotope, and the charge state of each atom in FIGURE Q37.12. Give your answer in symbolic form, such as 4 He + or 8 Be - . a. b. n Pn n P. (P
-
Consider the control system discussed in the last two long paragraphs of Box 22.2. It has GH = (1+ iz)[iz(1 iz)] 1 , with z = a dimensionless frequency and some time constant. (a) Show that there...
-
In the parallel circuit of Figure P32.45, the current amplitude is the same through the inductor branch, the capacitor branch, and the resistor branch. If \(L=0.36 \mathrm{mH}\) and \(\mathrm{C}=1.0...
-
Consider an economy with two labour markets, neither of which is unionized. Now suppose a union is established in one market. a. Show the effect of the union on the market in which it is formed. In...
-
How can firms protect themselves from political risks?
-
Study mission statements from several international businesses in the same industry. How do they differ, and how are they similar?
-
Suppose that BP is considering exploring a new oil field. a. Assuming that BP needs to borrow money in the bond market to finance the purchase of new oil rigs and drilling machinery, why would an...
-
Must all the values in the same column of a relation have the same length?
-
A heat engine has a heat input of 3 Ã 104 Btu/h and a thermal efficiency of 40 percent. Calculate the power it will produce, in hp. Source 3 x 10 Btu/h 40% HE Sink
-
A dormitory at a large university, built 50 years ago, has exterior walls constructed of L s = 25-mm-thick sheathing with a thermal conductivity of k s = 0.1 W/m K. To reduce heat losses in the...
-
A new building to be located in a cold climate is being designed with a basement that has an L = 200-mm-thick wall. Inner and outer basement wall temperatures are T i = 20C and T o = 0C,...
-
A composite one-dimensional plane wall is of overall thickness 2L. Material A spans the domain L < x < 0 and experiences an exothermic chemical reaction leading to a uniform volumetric generation...
-
Find V 1 V 5 V source I 2 I 3 I 4 I 5 R 1 R 2 R 3 R 4 R total. V 2 = 6 0 . 0 V , V 3 = 9 0 . 0 V , V 4 = 5 0 . 0 V , I 1 = 1 . 5 A , I total = 4 . 0 A , R 5 = 3 0 ohms. Indicate where appropriate....
-
Two point charges, -2.4C and 5.616 C, are placed at x = 0 cm and x = 9.7 cm, respectively. Consider the x- axis directed to the right. 1.0p 8a At what point along the x axis is the electric field...
-
As you know, the value of. It is defined as the ratio of the circumference of a circle C divided by its diameter 2r. That is x-C/2. a) Let's assume that you measured a circumference of a circle to be...
Study smarter with the SolutionInn App