Hi, How can you charge an electroscope negatively? Is it by using a positively charged rod? Can someone please help me? Thank you :)

8,545 questions
1. physics (electric charges)

Hi, How can you charge an electroscope negatively? Is it by using a positively charged rod? Can someone please help me? Thank you :)

asked by gaveen on May 12, 2010
2. physics

Hi, How can you charge an electroscope negatively? Is it by using a positively charged rod? Can someone please help me? Thank you :)

asked by gaveen on May 12, 2010
3. physics (electric charges)

Hi, How can you charge an electroscope negatively? Is it by using a positively charged rod? Can someone please help me? Thank you :)

asked by gaveen on May 12, 2010
4. physics

if a negatively charged rod is brought near a negatively charged electroscope, there will be no effect the leaves will fall the leaves will spread farther apart the electroscopw will become positively charge

asked by kriti on March 28, 2011
5. PHYSICS-

Given a plastic rod and fur,explain how you would charge the electroscope positively and negatively.

asked by DICKSON.C on April 27, 2016
6. physics needed asap

When you bring a positively charged rod next to the electroscope without touching it, the electroscope is neutrally charged, yet the leaves at the bottom of it repel each other. Why?

asked by tyrell on April 13, 2012
7. physics needed ASAP

When you bring a positively charged rod next to the electroscope without touching it, the electroscope

asked by tyrell on April 13, 2012
8. Science

To neutralize a pithball electroscope all you have to do is to hold it for a very short time. Explain what happens to discharge the pith ball if it is a)negatively charged b)positively charged

asked by anum on April 28, 2008
9. Physics

7. Two metal spheres are suspended from insulating threads. A negatively charged rod is brought near these spheres. One sphere is pushed away from the rod and the other is attracted toward it. Describe the behavior of the spheres. SOLUTION: ----> {Metal

asked by sally on May 29, 2009
10. Physics

A neutral ball is suspended by a string. A positively charged insulating rod is placed near the ball, which is observed to be attracted to the rod. Why is this? 1. The ball becomes negatively charged by induction. 2. The string is not a perfect conductor.

asked by Lynn on July 23, 2013
11. physical science

6. If one body is positively charged and another body is negatively charged, free electrons tend to [A. move from the negatively charged body to the positively charged body.] B. remain in the positively charged body. C. remain in the negatively charged

asked by jake on March 6, 2012
12. Physics

If you shine an ultraviolet light on the metal ball of a negatively charged electroscope, it will discharge. But if the electroscope is positivelely charged, it won't discharge. Why?

asked by Jake on April 2, 2008
13. HELP

how can you tell the difference between a positively charged and a negatively charged object by using a electroscope Ashley: Please include the subject in your questions: Science, or Electricity would have been appropriate here. You can only determine the

asked by ashley on November 29, 2006
14. Physics

The figure shows portions of two large, parallel, non-conducting sheets, each with a fixed uniform charge on one side. The magnitudes of the surface charge densities are σ(+) = 4 μC/m2 for the positively charged sheet and σ(-) = 10 μC/m2 for the

asked by Lyra on February 17, 2014
15. Electricity and Electronics

If one body is positively charged and another body is negatively charged, free electrons tend to A. move from the negatively charged body to the postively charged body. B. move from the postively charged body to the negatively charged body. C. remain in

asked by Mikaela on August 22, 2012

You know that a cetrain electroscope is charged because the foil extends when there is nothing near to influence it. when a balloon rubbed with fur is brought near (but not near to change the net charge on the electroscope), the gold foil is seen to move

asked by jen on January 15, 2009
17. Science

I can't find this answer in my book but can someone tell me if its right please? When you remove electrons from a metal cup, the cup becomes: negatively charged - positively charged or ionized? I think it is negatively charged. Thanks

asked by Sue on October 9, 2012
18. Natural science

What will happen if a positively charged glass rod is brought near another positively charged glass rod that is suspended by a silk thread

asked by Rethabile on July 23, 2018
19. Natural science

What will happen if a positively charged glass rod is brought near another positively charged glass rod that is suspended by a silk thread

asked by Rethabile on July 22, 2018
20. english..

Can someone help me change up the words? A positively charged drum has the image drawn on it with a laser. The areas touched by light become negatively charged. Positively charged toner particles are attracted to the negative areas on the drum. The drum

asked by thez on February 16, 2015
21. Physics

Which is an example of gaining a static charge by conduction? c) bringing a charged rod near an electroscope d) touching your car on a cold day and getting a shock I knew that a and b were not the answer, but I couldn't figure out if it was c or d, so I

asked by Itssmeee on April 24, 2019
22. Science

In a classroom experiment, a student rubs a comb against her hair. The child is then brought near bits of paper resting on a surface. Which of these can be concluded if the comb picks up bits of paper? A. The comb is an insulator, but paper conducts

asked by Landon on April 24, 2019
23. Electronic

If one body is positively charged and another body is negatively charged, will the free electrons tend to move from the negatively charged body to the positiovely charged body? yes

asked by Ed on September 27, 2006

Two small insulating spheres with radius 7.00×10^−2m are separated by a large center-to-center distance of 0.565m . One sphere is negatively charged, with net charge -2.05μC , and the other sphere is positively charged, with net charge 4.10μC . The

asked by Josh on May 21, 2014
25. physics

lighted matchstick brought near the negatively charged electroscope

asked by somebody on June 10, 2017
26. Physics

ANY ANSWERS WILL HELP! THANKS! 1. Isolated points of electric charge are called ____. 4b. ____ was the American physicist who first measured this fundamental unit of charge. 5. This type of electrification occurs when the charging rod touches an

asked by Al on December 17, 2013
27. Physics

There are two conducting concentric hollow spheres of outer radii and ( ). The thickness of the material of both spheres is . The inner sphere is negatively charged with charge density . The larger sphere is positively charged with charge density . (a)

asked by P on February 24, 2013
28. science

Mei-Ling is given the task of studying the compound calcium bromide. Before she even begins her research, what information can Mei-Ling obtain from the compound's chemical name alone? Select all that apply. She can tell that the compound forms molecules.

asked by macie on May 14, 2019
29. science help

One group of students is investigating the properties of charged objects. Their observations are listed below. When two positively charged objects are brought close to each other, they push each other away. When two negatively charged objects are brought

asked by Oscar on December 1, 2015
30. Physical Science

What is the length of an aluminum rod at 65 degress celcius if its length at 15 degrees celcius is 1.2 meters? Finallength-initiallength=coefficentlinearexpansion*(65-15). You can get the coefficent of linear expansion for aluminum from your text or a

asked by Mirayah Robinson on July 5, 2005
31. Physics

Explain using an example how to charge an object positively using only a negatively charged object.

asked by Sam on April 13, 2009
32. Physics - urgent help needed

Explain using an example how to charge an object positively using only a negatively charged object.

asked by Sam on April 13, 2009
33. Physics

Explain using an example how to charge an object positively using only a negatively charged object.

asked by Sam on April 13, 2009
34. physics

If you rub a glass rod and silk together, the rod will then become positively charged, the metal ball will become negative,and the leaves will be positive, making it closer together ... or If you rub a glass rod and silk together, the rod will then become

asked by anonymous on March 25, 2009
35. physics

How can you charge an object negatively with only the help of a positively charged object?

asked by Nicole on July 14, 2010
36. physics, help!!

A metallic sphere initially has a net charge of +4.0 nC. A negatively-charged rod initially has a net charge of –6.0 nC. When the rod touches the sphere 8.2 x109 electrons are transferred to the sphere. What is the new net charge on the sphere?

asked by Ella on November 9, 2012
37. Physics

1. Two objects suspended by insulating strings attract each other due to static electricity? a) are they neccessarily oppositely charged? b) After they are allowed to touch, they continue to attract and need to be pulled away from each other by the

asked by anonymous on July 5, 2011
38. physics

A negatively charged rod is brought near a neutral sphere supported by an insulating stand. What type of charge would you expect to find on the side of the sphere nearest the rod and on the other side if the sphere is (a) a conductor and (b) an insulator?

asked by yuzra on May 24, 2011
39. Physical Science

true or false in an atom, negatively charged electrons surround a positively charged nucleus

asked by Dallas on May 9, 2011
40. Physics

Two parallel, uniformly charged, infinitely long wires carry opposite charges with a linear charge density ? = 5 £gC/m and are 8 cm apart. What is the magnitude and direction of the electric field at a point midway between them and 49 cm above the plane

asked by Long on February 17, 2012
41. science

A 2.75-gram air inflated balloon is given an excess negative charge, q1 = -3.00 × 10-8 C, by rubbing it with a blanket. It is found that a charged rod can be held above the balloon at a distance of d = 5.80 cm to make the balloon float. In order for this

asked by Kels on February 19, 2013
42. Physics

When a rubber rod is rubber with wool, the rod becomes negatively charged. What can you conclude about the magnitude of the wool's charge after the rubber process? Why? Please Help!!

asked by Anonymous on March 25, 2014
43. Physics

When a rubber rod is rubber with wool, the rod becomes negatively charged. What can you conclude about the magnitude of the wool's charge after the rubber process? Why? Please Help!!

asked by Anonymous on March 25, 2014
44. physics

A negatively charged balloon sticks to a wooden door. However, an uncharged balloon does not stick to a wooden door. What is the nature of the charge on the wooden door? A. Electrically neutral B. Positively charged C. Conductor D. Lacking protons I am

asked by sophie on April 7, 2009
45. PHYSICS

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 µC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C toward the rod away from the rod

asked by suhani on September 16, 2013
46. college physics

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 µC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C toward the rod away from the rod

asked by suhani on September 18, 2013
47. physics

if you charge a rubber rod with a piece of fur and bring the rubber rod close to the top of the gold-leaf electroscope, is it induction or polarization?

asked by todi on February 10, 2008
48. Science

Use the electron theory to explain how one object can be negatively charged and another can be positively charged. help If electrons are negative, removing them will leave a net positive charge (net meaning fewer negative electrons than postivite protons).

asked by Nicka on November 29, 2006
49. Physics

Given a plastic rod and fur, how would you charge the electroscope

asked by Mary on April 20, 2019
50. physics

please check this: When a glass rod is rubbed with silk and becomes positively charged, a. electrons are removed from the rod b. protons are removed from the silk c. protons are added to the silk d. the silk remains neutral A Charge is most easily

asked by physics on March 14, 2009
51. science

In experiments involving a pithball electroscope, what causes the pithball to move? I believe the answer is B A. The pith material always holds a natural positive charge, and it is attracted to other charged objects. B. Electrons jump onto or off the

asked by Jenny on February 28, 2009
52. physics

What can we conclude from the attractive nature of the force between a positively charged rod and an object? 1. The object has no net charge. 2. Cannot be determined. 3. The object does not have an appreciable negative charge. 4. The object does not have

asked by Anonymous on February 20, 2010
53. physics

two charged plates are 2mm apart. An electron escapes from the negatively charged plate and reaches the positively charged plate in 1.2*10^-8 seconds. Find the electric field between the plates?

asked by Nowah on July 24, 2012
54. physics

two charged plates are 2mm apart. An electron escapes from the negatively charged plate and reaches the positively charged plate in 1.2*10^-8 seconds. Find the electric field between the plates?

asked by Nowah on July 24, 2012
55. Chemistry

Explain how a non metal atom becomes negative. Lose an electron, become negative. Bob Pursley isn't at his computer right now but I don't think he would mind if I explained that ADDING an electron to a non-metal makes it become negatively charged. I agree

asked by Mani on April 18, 2007
56. Physics

How Would You Charge A Gold-leaf Electroscope With A Plastic Rod And Fur?

asked by Chris on June 2, 2019
57. chemistry

if compound forms by ionic bonding, which is not true? A. a positively charged atom or group of atoms attracts a negatively charged atom or group of atoms B. the net cgare of the compound is zero C. the compund consists of just two atoms, each of opposite

asked by Darius Graham on January 12, 2007
58. electricity

If one body is positively charged and another is negatively charged what will free electrons do? Generally it flows providing they are touching (or close enough to jump) and are conductors. Please read: http://www.kpsec.freeuk.com/electron.htm

asked by catherine on June 7, 2007
59. Science

Describe what would happen if a positively charged sodium ion and a negatively charged chlorine ion came into contact?

asked by Trent on May 27, 2015
60. Organic chemistry

You are at isoelectric point for a solution of Leucine. If the number of negatively charged carboxyl ate groups, -COO-, is 1x10^19, how many positively charged amino groups, NH3+, would there be?

asked by Becky on October 5, 2011
61. physics

What can we conclude from the attractive nature of the force between a positively charged rod and an object? 1. The object has no net charge. 2. Cannot be determined. 3. The object does not have an appreciable negative charge. 4. The object does not have

asked by Anonymous on February 20, 2010
62. MS. SUE HELP- Chemistry

Check answers? 1) Why did J.J. Thomson reason that electrons must be a part of the atoms of all elements? A) Cathode rays are negatively charged particles**** B) Cathode rays can be deflected by magnets C) An electron is 2000 times lighter than a hydrogen

asked by Mary on October 7, 2016
63. Chemistry

Check answers? 1) Why did J.J. Thomson reason that electrons must be a part of the atoms of all elements? A) Cathode rays are negatively charged particles**** B) Cathode rays can be deflected by magnets C) An electron is 2000 times lighter than a hydrogen

asked by Mary on October 7, 2016
64. Physics-Check my answers

when combing you hair you scuff electrons from your hair onto the comb.is your hair then positively or negativley charged?How about the comb? -Your hair is postively charged, while the comb is negatively charged Why are the tires for trucks carrying

asked by Soly on November 6, 2007
65. science

1. Which type of metal did Rutherford shoot alpha particles into? A)Copper B)Zinc C)Gold D)Platinum 2.When Thomson held a positively charged plate near the cathode ray, the beam bent toward the plate. What conclusion can be drawn from this observation?

asked by katrina on January 9, 2017
66. answer check science

1. Which type of metal did Rutherford shoot alpha particles into? A)Copper B)Zinc C)Gold D)Platinum 2.When Thomson held a positively charged plate near the cathode ray, the beam bent toward the plate. What conclusion can be drawn from this observation?

asked by katrina on January 9, 2017
67. science

What does effect of negatively charged Object on positively charged object mean

asked by brenda on May 16, 2011
68. IPC

i don't have a book or anything to go look all this stuff up so i really need help understanding this.. Which of the following statements is not true? a)negatively charged objects attract other negatively charged objects. b)postively charged objects

69. physics

two positively charged sphere have combined charged of 0.5microcolumb and repulsive force of 1.0newton and it's distance separation is2.0meter.what is the charge of each spheres?

asked by Biruk on March 10, 2018
70. physics

two positively charged sphere have combined charged of 0.5microcolumb and repulsive force of 1.0newton and it's distance separation is2.0meter.what is the charge of each spheres?

asked by yared on March 11, 2018
71. Physics

There are two conducting concentric hollow spheres of outer radii R2 and R1 (R2>R1). The thickness of the material of both spheres is d. The inner sphere is negatively charged with charge density −σ1. The larger sphere is positively charged with charge

asked by Anonymous on February 21, 2013
72. physics

please check my answers and help me with the first one. how can you charge an object negatively with only the help of a positively charged object? -This one I am not too sure, when one material is rubbed against another electrons jump readily from one to

asked by Soly on November 6, 2007
73. Science

Why does my hair stand on end when I take off my hat on a cold, dry day? Everything you see is made up of atoms. They contain even smaller particles, called protons and electrons. Protons have positive electrical charges and they never move. Electrons have

asked by HERSHEYS on April 19, 2007
74. Science Question for Lance

Histones interact with DNA at specific loci because DNA has phosphate functional groups. This interaction occurs because histones have a net _____ positive charge, which derives from their ______ residues, and interact with DNA because of its net _______

asked by sara on July 22, 2006
75. Physics

1)When two bodies are charged, the total charge before and after charging remains the same because of: A)quantization of charges B)conservation of charges C)law of induction D)coulomb's law I got C but im not sure. I couldn't find anything to state

asked by Jon on April 9, 2008
76. physics

When two bodies are charged, the total charge before and after charging remains the same because of: A. quantization of charges B. conservation of charges C. law of induction D. Coulomb's law it is B? When a conducting sphere is charged positively,

asked by sophie on April 7, 2009
77. Science- Electric and Magnetic Potential Energy

1. At which position will the bar magnets most likely experience the least magnetic potential energy between them? D - position 4 2. A positively charged test object is moving toward the positive source charge in an electric field. B - It's potential

asked by ImLegit on April 19, 2016
78. Physics

A point charge of charge 1 mC and mass 100 g is attached to a non-conducting massless rod of length 10 cm. The other end of the rod is attached to a two-dimensional sheet with uniform charge density σ and the rod is free to rotate. The sheet is parallel

asked by Nilesh P. on May 14, 2013

A point charge of charge 1 mC and mass 100 g is attached to a non-conducting massless rod of length 10 cm. The other end of the rod is attached to a two-dimensional sheet with uniform charge density σ and the rod is free to rotate. The sheet is parallel

asked by pyhsicamateur on May 15, 2013
80. Physics

A point charge of charge 1 mC and mass 100 g is attached to a non-conducting massless rod of length 10 cm. The other end of the rod is attached to a two-dimensional sheet with uniform charge density σ and the rod is free to rotate. The sheet is parallel

asked by hans on May 15, 2013
81. PHYSICS

1. Why is an electric field considered to be a vector quantity? 2. Draw the electric field around an electric dipole of +1 µC and -1 µC 3. How many electrons have been removed from a positively charged object if it has a charge of 1.5 x 1011 C? 4. A

asked by Hayden on December 21, 2012
82. physic 108

A charged nonconducting rod, with a length of 3.83 m and a cross-sectional area of 5.69 cm2, lies along the positive side of an x axis with one end at the origin. The volume charge density ρ is charge per unit volume in coulombs per cubic meter. How many

asked by k on January 21, 2013
83. physics

True or false questions a)Rubbing a polythene rod with a duster gives the rod extra negative charge. b)Rubbing a polythene rod with a duster takes away positive charge from the duster. c)The duster will have the same charge as the polythene rod it has

asked by Victor on February 8, 2009
84. PHYSICS

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 µC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C

asked by physics on September 28, 2013
85. physics

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 µC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C

asked by momen on February 23, 2017
86. PHYSICS

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 µC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C

asked by suhani on September 24, 2013
87. PHYSICS

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 µC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C

asked by vishal on September 13, 2013
88. PHYSICS

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 µC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C

asked by suhani on September 27, 2013
89. PHYSICS

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 µC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C

asked by suhani on September 23, 2013
90. physics

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 µC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C

asked by suhani on September 22, 2013
91. PHYSICS

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 µC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C

asked by physics on September 28, 2013
92. PHYSICS

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 µC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C

asked by physics on September 29, 2013
93. college physics

A rod 14.0 cm long is uniformly charged and has a total charge of -20.0 µC. Determine the magnitude and direction of the electric field along the axis of the rod at a point 36.0 cm from its center. N/C

asked by vishal on September 21, 2013
94. physical science

The oxygen atoms of a water molecule are most attracted to 1: Other oxygen atoms, negatively charged ions, positively charged ions or nonpolar molecules?

asked by palmer on November 6, 2007

A point charge of charge 1 mC and mass 100 g is attached to a non-conducting massless rod of length 10 cm. The other end of the rod is attached to a two-dimensional sheet with uniform charge density σ and the rod is free to rotate. The sheet is parallel

asked by Mathslover on May 18, 2013
96. Physics

Recall that for a finite rod of length L and total charge Q, the electric field for a point located a perpendicular distance r from the middle of the rod has a magnitude given by: Consider the limit of large distances, where a finite charged rod is

asked by Julia on February 11, 2010
97. pre ap physics

** When s conducting sphere is charged positively, initially the charge is deposited on the left side. However, due to the sphere's conducting nature, the charge spreads uniformly throughout the surface of the sphere. Charge is uniformly distributed

asked by Angela here again on February 27, 2011
98. Physics

Two parallel plates are 4.85 cm apart. The bottom plate is charged positively and the top plate is charged negatively, producing a uniform electric field of 5.51 x 104 N/C in the region between the plates. What is the time required for an electron, which

asked by Ashley on January 31, 2012
99. Physics

We have an infinite, non-conducting sheet of negligible thickness carrying a uniform surface charge density +σ=7.00e-6 C/m2 and, next to it, an infinite parallel slab of thickness D=17 cm with uniform volume charge density ρ=−4.94e-5 C/m3 (see sketch).

asked by Annoyingmous on June 15, 2013
100. + --> a sphere --> (+)

Multiple Choice Help: ** When s conducting sphere is charged positively, initially the charge is deposited on the left side. However, due to the sphere's conducting nature, the charge spreads uniformly throughout the surface of the sphere. Charge is

asked by Angela on February 25, 2011