A charge +Q and -2Q were placed on first and third of three very large parallel plates. The middle plate is earthed. Find the chargeon right extreem plate

17,079 questions, page 80
1. physics

The three charges in the figure are at the vertices of an isosceles triangle. Calculate the work that needs to be expanded, in Joules, to bring the charges together (as shown.) Take q=5.7 μC. The length of base is b=2.30 m. The lengths of sides are s=5.80

asked by Allie on January 28, 2015
2. physics

ok the question is....A point charge of 8.00 nC is at the center of a cube with sides that are 0.200 m. What is the electric flux through (a) the surface of the cube, (b) one of the six faces of the cube? ok so would I just use Gauss's law 4* pi*k*q? even

asked by J on January 25, 2008
3. Physics

Two charges +q and −q are separated by a distance d=50 cm. The electric field lines for this system form the the well-known pattern showed in the figure below. Consider two lines L1 and L2 lying on the same plane and leaving the positive charge at

asked by Brian on July 1, 2013
4. math algebra

Problem Page Brian rented a truck for one day. There was a base fee of \$15.99 , and there was an additional charge of 93 cents for each mile driven. Brian had to pay \$259.65 when he returned the truck. For how many miles did he drive the truck?

asked by alexis on January 11, 2017
5. Physics

A small m = 2.00 g plastic ball is suspended by a L = 24.0 cm long string in a uniform electric field, as shown in Figure P15.50. If the ball is in equilibrium when the string makes a 18.0° angle with the vertical as indicated, what is the net charge on

asked by Rachel on February 1, 2011
6. algebra

your club is in charge of making pins that students can buy to show their school spirit for the upcoming football game. you have 225 so far and you only have 2 hrs. left to make the rest of the pins. you need to make at least 400 pins.

asked by terri on February 13, 2013
7. W

A small plastic ball of mass m = 3.00 g is suspended by a string of length L = 24.5 cm in a uniform electric field, as shown in the figure below. If the ball is in equilibrium when the string makes a θ = 16.0° angle with the vertical as indicated, what

asked by Kaitie on July 1, 2012
8. INTRO TO ECO

Opportunity-cost theory suggests that the cost to an airline of letting its employees fly at no charge... A.is greater around the Christmas holidays B.will depend upon the value employees place upon travel C.zero D.depends upon alternatives avaliable to

asked by Brittany on October 11, 2010
9. physics

A small plastic ball of mass m = 1.50 g is suspended by a string of length L = 15.5 cm in a uniform electric field, as shown in the figure below. If the ball is in equilibrium when the string makes a θ = 19.0° angle with the vertical as indicated, what

asked by bob on March 15, 2013
10. Algebra

"Are the lines y=2x-6 and the lines and 2y=4x+12 parallel ?" Help me please.

11. physics

In an experiment to verify Newton's law of cooling, the temperature of hot water in a calorimeter T/oC is plotted against time t/min. Which of the following is true about the graph? a. the graph is linear and parallel to the T-axis b. the slope of the

asked by Sam on November 18, 2014
12. Physics

Air will break down as a dielectric when subjected to applied fields in excess of 3 * 10^6 N/C. a parallel plate capacitor using air as a dielectric has a capacitance of 1.0nF and a separation b/t plates of 1.0micrometer. how much energy U was stored in

asked by Nelly on April 23, 2010
13. Math

a farmer wants to put a fence around a rectangular field and then divide the field into three rectangular plots by placing two fences parallel to one of the sides. if the farmer can only afford 1000 yards of fencing, what dimensions will give the maximum

asked by Mary on January 22, 2012
14. physics

A 2 kg mass resting on a smooth plane inclined 20 degrees to the horizontal. A cord which is parallel to the plane passes over a massless, frictionless pulley to a 4 kg mass which will drop vertically when released. What will be the speed of the 4 kg mass

asked by Aim Senallagam on February 19, 2014
15. Physics

I need help with this question...A skateboarder, starting from rest, rolls down a 12.0-m ramp. When she arrives at the bottom of the ramp her speed is 8.90 m/s. (a) Determine the magnitude of her acceleration, assumed to be constanIf the ramp is inclined

asked by Nancy on October 8, 2010
16. physics

A winch is used to drag a 375 N crate up a ramp at a constant speed of 75 cm/s by means of a rope that pulls parallel to the surface of the ramp. The rope slopes upward at 33 degreesabove the horizontal, and the coefficient of kinetic friction between the

asked by dillion on February 26, 2012
17. physics

Air will break down as a dielectric when subjected to applied fields in excess of 3 * 10^6 N/C. a parallel plate capacitor using air as a dielectric has a capacitance of 1.0nF and a separation b/t plates of 1.0micrometer. how much energy U was stored in

asked by K on April 25, 2010
18. physics!!

A skateboarder, starting from rest, rolls down a 14.0-m ramp. When she arrives at the bottom of the ramp her speed is 7.40 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. (b) If the ramp is inclined at 20.5° with respect to

asked by michelle on October 5, 2010

A skateboarder, starting from rest, rolls down a 14.0-m ramp. When she arrives at the bottom of the ramp her speed is 7.40 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. (b) If the ramp is inclined at 20.5° with respect to

asked by michelle on October 6, 2010
20. Chemistry

A solution that contains a large amount of salt and a small amount of water is said to be a _______ solution. A. unsaturated B. saturated C. dilute D. concentrated im pretty sure its C

asked by Dave on February 25, 2015
21. physics

water is being heated in a large beaker. there is a bunsen under it. if a second bunsen was added bellow the largest beaker, what affect would this have? why? (refer to particle behaviour)

asked by lissa on November 8, 2011
22. Physics

How large a pressure increase (in ATM) must be applied to water if it is to be compressed in volume by 1%? The bulk modulus of water is 2 × 109 N/m2 and 1 ATM = 105 N/m2

asked by Charlie on December 10, 2008
23. physics

a large truck is driving down the street when it hits a small bug a) which object has the larger force acting on it? b) which object has the larger acceleration?why?

asked by lisa on May 17, 2012
24. chemistry

Determine how much of each product (in g or L) is formed. 2.50g of aluminum metal is placed in a large container of concentrated copper (ll) suflate to produce copper metal.

asked by Amy on April 21, 2013
25. Accelerated Physics

An 18.0 kg box is released on a 35.0° incline and accelerates down the incline at 0.269 m/s2. Find the friction force impeding its motion. How large is the coefficient of friction?

asked by Jamie on November 16, 2010
26. English

What kind of phrase is the underlined group of words? The house across the street has a large front dooradjective phrase B. adverb phrase C. appositive phrase

asked by Dasha on February 10, 2016
27. Maths

P=(2J+1)exp(-(BJ(J+1))/kT) where B, k and T are constants a. Show that dP/dJ=(2-(B(2J+1)^2)/kT)exp(-BJ(J+1)/kT) b. Show that P exhibits a maximum and determine the expression for Jmax c. Find the value of P when J=0 and the limiting value of P when J

asked by Alice on October 28, 2008
28. PHYSICS

Two forces, one four times as large as the other pull in the same direction a 10kg mass and impart to it an acceleration of 2.5 m/s^2. if the smaller force is removed. what is the acceleration of the mass?

asked by Camz on November 23, 2015
29. AP Physics

An 18.0 kg box is released on a 35.0° incline and accelerates down the incline at 0.269 m/s2. Find the friction force impeding its motion. How large is the coefficient of friction?

30. planning & implementing for the environment

The program that will be most likely to have flexible schedules with large blocks of time is  A. adult-centered. C. child-centered. B. child-initiated. D. open.  C is my answer

asked by Amanda on October 16, 2014
31. law

Most management in large law firms is handled by: (Points: 5) judges. legal administrators. systems. contract employees Is it "legal administrators"

asked by Tony on October 6, 2011
32. physics

A crate starts from rest at the top of a large, frictionless spherical surface, and slides into the water below. At what angle, θ, does the crate leave the surface?

asked by Kaitlyn on December 4, 2009
33. Physics

An 17.2 kg box is released on a 35.7° incline and accelerates down the incline at 0.274 m/s2. Find the friction force impeding its motion. (in N) How large is the coefficient of friction?

asked by Ashley on February 10, 2015
34. Statistics normal distribution

54% of the children in a large city are boys. Using a suitable approximation, calculate the probability that a random sample of 1000 children contains more boys than girls ?

asked by Kelvin on June 1, 2013
35. Health

When you wake up and a large pimple greets you when you look into the mirror, this endocrine gland is to blame Thymus Gland Reproductive Gland Thyroid Gland Pancreas

asked by Michelle on November 13, 2015
36. Data Management

In a manufacturing process, it is estimated that only 2% of the bolts that are machined are declared defective, that is, they are either too large or too small. In a package of 50 bolts, what is the probability that there is at least one defective bolt?

asked by Alejandro on January 21, 2014
37. math

if the area of a small rectangle is sick square feet in the dimensions are doubled then what is the area of a large rectangle explain

asked by yuana on February 27, 2013
38. Physics

We don't notice the wavelength of moving matter in our common experience. Is this because the wavelength is extraordinarily large or extraordinarily small?

asked by Jake on April 2, 2008
39. Literacy

How is print literacy incorporated in the everyday routine of the classroom? How is print literacy addressed in large group activities?

asked by Patrick on October 26, 2018
40. geography

What is the name of the large mountain range in South America? I know the longest mountain range is The Andes so can I assume this is the answer my teacher is looking for??

asked by Reed on November 8, 2010
41. Science

A large beaker contains 500ml of liquid mercury? The mass of mercury is 6773 g. What is the density? Do I divide 6773/500?

asked by Vonte' on October 23, 2011
42. physics

a string is wound a wheel of radius 20cm. how large is the angle through which the wheel must turn to unwind 30cm of the string.

43. managerial economics

Can anyone give me any information concerning the rate of business failures, and does the rate of failure off small businesses differ from that of large businesses?

asked by jean on February 24, 2008
44. College Mathematics

The mass of a large stone block was determined to be 3361 kg. What is the weight of this stone in tons? A. 3.7 B. 1680.5 C. 1512.45 D. 3361

asked by Winston on January 5, 2014
45. Chemistry

if we mix 25 grams of sodium bromide with a large amount of potassium chloride, what will our theoretical yield of sodium chloride be?

asked by Enrique Loza on February 4, 2013
46. Chemistry

Hi everyone, I'm having problems with effective nuclear charge. Regarding these problems. Calculate Zeff for a valence electron in an oxygen atom. and Calculate Zeff for the 4s electron in a copper atom, . and Calculate Zeff for a 3d electron in a copper

asked by Robert on November 9, 2008
47. Chem

Hi everyone, I'm having problems with effective nuclear charge. Regarding these problems. Calculate Zeff for a valence electron in an oxygen atom. and Calculate Zeff for the 4s electron in a copper atom, . and Calculate Zeff for a 3d electron in a copper

asked by Vinny on November 7, 2008
48. Project Management

What are some examples of situations encountered by Projects within your Company that would greatly benefit from contingency planning? Many, many high value ship overhaul projects where repair parts are in the critical path schedule. Often, it is cheaper

asked by Elaine on November 14, 2006
49. physics

a man weighs 162 pounds, and is 69 inches tall. his forearm is parallel to the ground. he holds an 8 pound weight in his hand. the biceps has an angle of insertion of 85 degrees with a distance of 1.4 inches at insertion. the system is equilibrium. what

asked by jh on March 29, 2017
50. physics

An athlete at the gym holds a 4.33 kg steel ball in his hand. His arm is 68.7 cm long and has a mass of 4.69 kg. What is the magnitude of the torque about his shoulder if he holds his arm straight out to his side, parallel to the floor? Torque = massball x

asked by Sara on October 12, 2008

Let AB be the diameter of a circle, and let point P be a point on AB. Let CD be a chord parallel to AB. Prove that PA^2 + PB^2 = PC^2 + PD^2 It can be solved using geometry methods (no trig). Anyway, I figured out that PA^2 +PB^2 = 2OP^2 + 2OB^2. However,

asked by Knights on January 15, 2013
52. History

CHECK AND CORRECT MY ANSWER PLEASE!ASAP!I ONLY KNOW THE 1ST ONE. 1. What was the primary cash crops of Jamestown? A. Corn B. Cotton C. Tobacco** D. Sugar 2. What is the main reason settlers of the middle colonies develop their economy? A. Land for large

asked by CHECK AND CORRECT! ASAP! on October 3, 2017
53. Economics

You are the manager of a firm that sells CD players and DVD players. You work in Buffalo, New York and this is the middle of winter. So the people that live within walking distance are the only customers you might get, and there are no other stores nearby.

asked by Leonardo Yang on November 12, 2012
54. History

Who would oppose this decision? Why might they do so? What i said was that most Southerners would oppose this decision because they own large plantations and farmers and/or wealthy people/families don't and/or do the work by themselves. However, I wasn't

asked by Nicole on April 27, 2013
55. algebra 2

While playing Yahtzee, Amanda rolls five dice and gets 1, 2, 4, 5, 6. She decides to keep the 1, 2, and 4, and reroll the 5 and 6. After rerolling the 5 and 6, what is the probability for a large straight (1-2-3-4-5) or three 4's? Also, what is the

asked by blc on March 10, 2009
56. Social Studies

Which statement is true about Africa? (A) It has 2 large deserts. (B) Most most people live in southwest. (C) Most of the worlds people live their. (D) It is about 3 million square miles in size.

asked by Emily on October 5, 2008
57. Physics

A very large electric current can flow inside a tornado from the clouds to the ground. If the magnetic field is measured to be 1.62×10-8 T at a distance of 8.33 km from the tornado, then what is the magnitude of this current?

asked by Wardy on June 6, 2012
58. algebra 2

While playing Yahtzee, Amanda rolls five dice and gets 1, 2, 4, 5, 6. She decides to keep the 1, 2, and 4, and reroll the 5 and 6. After rerolling the 5 and 6, what is the probability for a large straight (1-2-3-4-5) or three 4's? Also, what is the

asked by blc on March 10, 2009
59. Health and Physical Education

1. When you wake up and a large pimple greets you when you look into the mirror, this endocrine gland is to blame. thymus gland reproductive gland (my answer) thyroid gland pancreas

asked by Betta Fish on January 9, 2017
60. math

Jonah has a large collection of marbles. He notices that if he borrows 5 marbles from a friend, he can arrange the marbles in rows of 13 each. What is the remainder when he divides his original number of marbles by 13?

asked by rich on August 19, 2012
61. Statistics

Suppose systolic blood pressure (the higher of the two blood pressure readings) of a large group of individuals is normally distributed. If the mean is 122 and the standard deviation is 20, then

asked by JOHN on October 9, 2016
62. College Physics

A 1.00 g lead bullet at 28.0°C is fired at a speed of 230 m/s into a large block of ice at 0°C, in which it becomes embedded. What quantity of ice melts? Can someone walk me through this step by step?

asked by Anand on January 30, 2012
63. Physics- Equilibrant Force

Two movers are pushing a large crate with a force of 50.0 N each. One pushes north, the other east. What is the equilibrant force? a. 71 N Southwest b. 50 N Northeast c. 100 N Southeast d. 71 N Northeast

asked by MM on November 21, 2016
64. math

the battery lifetime is normally distributed for large samples with a standard deviation of 70 days. if 16% of the batteries have a lifetime of 850 or higher, what is the average battery life?

asked by courtney on January 16, 2017

Which investment vehicle carries the least risk? A. Government bonds B. Large company stocks C. Small company stocks D. U.S. Treasury bills My answer is C

asked by Steve on April 27, 2018
66. Math

Kairi and Jacob have \$80 for movies and dinner. If the movies cost \$12 per person and \$10 for a large popcorn and two pops, how much money do they have left for dinner? What equation would be best to use for this problem?

asked by Tori on April 27, 2016
67. math 6th

You make a large bowl of salad to share with your friends.Your brother eats 1/3 of it before they come.What fractional portion of the origanal bowl of salad does each friend receive

asked by kaylah on October 17, 2016
68. Occupational Safety

Compare countries Thailand and South Africa for Occupational Health and Safety statistics..how do they compare? who is in charge of worker safety in those countries? how are the laws enforced? and what are typical violations found and the fines given out

asked by Ashley on April 10, 2007
69. Physics

A 19.0 ohm, 9.00 ohm , and 8.00 ohm resistor are connected in parallel to an emf source. A current of 9.00 A is in the 9.00 resistor. Find the Potential difference across the source. How do i solve this?

asked by Anonymous on February 15, 2012
70. math

Two vertices of a triangle lie on some line. The third vertex belongs to the line that is parallel to the first one. Prove the area of that triangle does not depend on the position of the third vertex on the line.

asked by HELP!!! on April 19, 2017
71. Physics

A 20 N force acts on a 10 kg object parallel to the object's displacement. If the force acts for 32 m, what is the final kinetic energy, in J, of the object assuming it starts from rest?

asked by Megan on July 2, 2012
72. Calculus AB

A rectangle is inscribed in a right triangle with legs of length 5 and 12. The sides of the rectangle are parallel to the legs of he triangle. Find the dimensions of the rectangle that has the largest area?

asked by Michael on July 30, 2016
73. engl1301

Finishing quickly/quick/as quick/so quick … is not as important as answering all the question correctly. which word would be correct here?quickly bc of parallel sentence,correctly.,thanks.

asked by engl1301 on February 11, 2017
74. math

If a pyramid is sliced by a plane parallel to the base of the pyramid and that plane bisects the altitude of the pyramid, what percentage of the volume of the pyramid lies below the slicing plane?

asked by Kyle on August 11, 2010
75. Finance

Clanton Company is financed 75 percent by equity and 25 percent by debt. If the firm expects to earn \$30 million in net income next year and retain 40% of it, how large can the capital budget be before common stock must be sold?

asked by Statistics on August 13, 2011
76. statistics

A researcher is interested in estimating the noise levels in decibels at area urban hospitals. She wants to be 90% confident that her estimate is correct. If the standard deviation is 4.13, how large a sample is needed to get the desired information to be

asked by Valerie on November 2, 2010
77. Economics

How can a trade deficit actually increase the productivity of an economy? 1. by causing people to save 2. by building up a large amount owed 3. by importing funds used for capital deepening 4. by importing goods for short–term use I think 1, can anyone

asked by John on January 23, 2015
78. English

Select the vocabulary word that best completes the sentence. The vice president asked his secretary to _[blank]_ the transcript and to notify him of any large glitches in its wording. approach paraphrase skim infer I think the answer is "skim"

asked by Klauus on May 7, 2019
79. Speech and Hearing Science

1.What is the name of the large wedge shaped cartilage that supports most of the laryngeal wall? 2.What is the name of the small bone that is located directly above the thyroid cartilage of the larynx? 3. What type of tissue lines and protects the surface

asked by Rebecca on December 23, 2008
80. PUBLİC LAW, Political science, ir

You are a Spanish conquistador who just took control of a large territory in Americas in medieval time. Which political concept requires you that you should obey the orders of the Spanish King and not to administrate the land on your own??(this question is

asked by P on April 10, 2017
81. US History

Explain how the commission plan, the city-manager plan, nonpartisanship, at-large elections, and stronger mayors worked together to try to destroy the power of the urban party bosses. What assumptions did all these approaches to reform share?

asked by JF on March 25, 2015
82. English

Identify the subject and the verb in the sentences below. 1. There were a large saguaro cactus and a barrel cactus visible from our room. 2. There goes the tree specialist to fertilize our neighbor's Japanese maple. 3. Bright is her smile, but heavy is her

asked by DaKosha on October 9, 2012
83. Statisitcs

The operations manager of a large plant with four departments wants to estimate the person-hours lost per month due to accidents. describe a sampling plan that would be suitable for estimating the plantwide loss and for comparing departments.

asked by Rhea on September 19, 2010
84. College Algebra/Drug Calculations

Good afternoon. I was given a large packet to practice some math to prepare me for drug calculations. For some reason, I cannot get the answer to this fraction. I've tried a few ways, but maybe I forgot a step or am overlooking some silly mistake... 5/6 x

asked by NursingStudent on May 26, 2016
85. science

A scientist goes to a large international conference and hears about a new discovery. The scientist is very excited about these new findings and decides to verify the other scientists' results by conducting her own investigations. The scientist is being

asked by Miai on September 16, 2013
86. Calculus - Riemann Sum

Given a function f(x) = squr(3 + 2x), on [-1,1], subdivided into 4 equally large intervals, calculate the Riemann sum SR4 = 4Ei=1 f(xi)delta(x). my attempt at the solution: [-1,1], a = -1 and b = 1 delta(x) = 1 - (-1)/n = 2/n xi = a + delta(x)i xi = -1 +

asked by Robert on August 6, 2012
87. Geometry

TV screens are measured on the diagonal. If we have a TV-cabinet that is 72 inches long and 64 inches high, how large a TV could we put in the space (leave 2-inches on all sides for the edging of the TV)? Round your answer to the nearest tenth.

asked by Rachel on June 2, 2017
88. Math

Suppose a large number of people take a take and every single student gets half of the answers correct. In this case, the standard deviation is: A) Equal to the mean B) Equal to the median C) Equal to zero D) Impossible to determine without more

asked by John on September 17, 2007
89. Calculus and Vectors

The volume of a large soup can is 1L. The cost of the top is \$0.002/cm^2 while the sides and bottom cost \$0.001/cm^2.Find the minimum cost to pruduce the can given that the radius must be between 5cm and 10cm for shipping purposes.

asked by Matthew Slaney on January 31, 2016
90. Math

please chek my answer thanks :) What is purchase price of 15 Warren Corporation bounds with a coupon rate of 7 3/4 and a current market price of 98 ? The commission charge is \$8 per bound. The date of the transcation is March 5 and the bond pays interest

asked by Lucie on November 29, 2007
91. College Physics

A proton moves with a velocity of vector v = (6ihat - 1jhat + khat) m/s in a region in which the magnetic field is vector B = (ihat + 2jhat - 3khat) T. What is the magnitude of the magnetic force this charge experiences? answer in Newtons. I tried F=qvb

asked by Anand on March 10, 2012
92. Chemistry

Draw the structure of the tripeptide “Asp-Ala-Ile” at pH = 1. Then determine the total charge of the tripeptide. The side chain of each amino acid is shown below in the form at pH = 7. (So when you use them to answer this question, you might need to

asked by Jennifer on April 27, 2017
93. English grammar

Please help me to arrange correct grammar below: Nov. 18,2015 Please be informed that starting on Nov.23, 2015 Due to high consumptiom for the electric bills The internet usage charge will be P15.00 per hour and there will be no more promo for P25.00 2

asked by jessie on November 19, 2015
94. physics

Two small beads having positive charges q1 = 34.0 nC and q2 = 55.0 nC are fixed so that the centers of the two beads are separated by a distance d = 0.450 m as shown in the figure. At what position x relative to q1 could you place a third small bead of

asked by Linda on January 20, 2015
95. Science - physics

A circular wire of radius R carries a total charge Q distributed uniformly over its circumference. A small length of wire subtending angle teta at the centre is cut off. Find the electric field at the centre due to the remaining portion

asked by uma on April 14, 2012
96. Computers/Database

So I created normalization steps for this pet and owner table in a database class : Started with Candidate keys, followed by functional dependency break the tables up into tables , then the referential integrity and the end . PET

asked by Jason on February 18, 2018
97. Math

Kailey's recipe calls for 1 1/2 cups of oil to make one large batch of cookies. How much oil will she need for 1/4 batch?

asked by Liv on February 7, 2017
98. economics

What is the relationship between GDP and the business cycle? How can you use information about the business cycle when making a decision about a large purchase?

asked by Anonymous on October 11, 2010
99. geometry

DEF and ABC are complementary angles and ABC is nine times as large as DEF. Determine the measure of each angle.

asked by angela on June 27, 2012
100. Physics

Does an apple exert a gravitational force on the earth? If so, how large a force? Consider an apple (a) Attached to a tree and (b) falling.

asked by Stuck on November 6, 2016