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A negative charge -Q is placed inside the cavity of a hollow metal solid. The outside of the solid is grounded. Q: Is there any excess charge induced on the inner surface of the piece of metal? A: Yes, +Q

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  1. Physics

    A negative charge -Q is placed inside the cavity of a hollow metal solid. The outside of the solid is grounded. Q: Is there any excess charge induced on the inner surface of the piece of metal? A: Yes, +Q Q: Is there any excess charge on the outer surface
  2. Physics

    a metal ball of radius R is placed concentrically inside a hollow metal sphere of inner radius 2R & outer radius 3R. The ballis given a charge +2Q and the hollow sphere a total charge -Q. Calculate. electrostatic potential energy of system.???
  3. Physics

    A 4.70 nC point charge is placed at the centre of a hollow metal sphere that has an inner radius 4.70 cm and an outer radius 17.6 cm. The metal sphere itself is charged to 8.40 nC. a)What is the magnitude of the electric field at a distance of 1.60 cm from
  4. physics

    An irregularly shaped chunk of concrete has a hollow spherical cavity inside. The mass of the chunk is 32kg, and the volume enclosed by the outside surface of the chunk is 0.020m^3. What is the radius of the spherical cavity? To solve this, you need to
  5. Physics

    The figure(Figure 1) shows a solid metal sphere at the center of a hollow metal sphere. Assume that E=1.2×104N/C. What is the total charge on the exterior of the inner sphere?
  6. Physics

    A hollow metal sphere has inner and outer radii of 20.0 cm and 30.0 cm, respectively. As shown in the figure, a solid metal sphere of radius 10.0 cm is located at the center of the hollow sphere. The electric field at a point P, a distance of 15.0 cm from
  7. mathematics

    A spherical ball weighs three times as much as another ball of identical appearance and composition. The second ball weighs less because it is actually hollow inside. Find the radius of the hollow cavity in the second ball, given that each ball has a
  8. Torque and shear stress

    A solid shaft of 65mm outside diameter and a hollow shaft of 85mm outside diameter are connected by 6 bolts with the mean pitch of thread being 155mm. The shear stress due to the torque on the shafts is equal to the shear stress on the bolts. a) Find the
  9. physics

    A hollow metal ball carrying an electric charge produces no electric field at a point: is it inside the ball?
  10. Physics

    Consider a conducting spherical shell with inner radius b = 0.862 m and outer radius c = 1.21 m. There is a net charge q2 = 3.82 ìC on the shell. At its center, within the hollow cavity, there is a point charge q1 = 2.89 ìC. Determine the flux through
  11. Biology

    To function properly, a neuron must maintain a a. membrane potential b. neurotransmitter c. negative charge on the inside d. positive charge on the inside Thank you so much!
  12. Biology

    To function properly, a neuron must maintain a a. membrane potential b. neurotransmitter c. negative charge on the inside d. positive charge on the inside Thank you so much!
  13. physics

    Two spools with equal radii and equal masses are wound onto opposite ends of a massless string, the center of which is then hung over a massless, frictionless pulley, as in the diagram to the right. The spool on the left is a solid cylinder, while the one
  14. Physics-Gauss' Law, hard

    Thank you Damon for answering my first questions fast and accurately. Do you or anybody else know how to do these harder Gauss' Law Problems? 1. A solid metal sphere of radius R has charge +2Q. A hollow spherical shell of radius 3R placed concentric with
  15. physics

    after chegg/./com write this /homework-help/questions-and-answers/figure-provided-280-m-long-solid-metal-cylinder-center-hollow-metal-cylinder-electric-fiel-q26543965
  16. Physics!! Help!!!!!

    . A neutral conducting sphere contains a spherical cavity. A point charge +q is located at the |center of the cavity. A. What is the total surface charge on the interior surface of the conductor? B. What is the total charge on the exterior surface of the
  17. physics

    consider a solid metal ball with radius r and charge q. what is the electric field intensity at the center, anywhere inside the ball and anywhere outside the ball?
  18. PHYSICS

    The electric field everywhere on the surface of a thin, spherical shell of radius 0.710 m is measured to be 860 N/C and points radially toward the center of the sphere. (a) What is the net charge within the sphere's surface?nC (b) What can you conclude
  19. Physics

    What is the energy from a hollow cylinder of surface charge density sigma, radius R and charge q? Energy? DO you mean E, the electric field intensity? If you mean Energy, it is an odd question, but the answer is that it is the work it took to put the
  20. science

    a hollow conducting shere of radius R has a charge Q placed on its surface. what is the electric field and potential inside the sphere?
  21. Physics

    An uncharged spherical conducting shell surrounds a charge -q at the center of the shell. The charges on the inner and outer surfaces of the shell are respectively... a] -q,-q b]+q, +q c]-q, +q d]+q,0 e]+q, -q 2) A postive point Charge is enclosed in a
  22. physics

    A neutral conductor completely encloses a hole inside of it. You observe the outer surface of this conductor carries a charge of -12 uC. (a) Can you conclude that there is a charge inside the hole? If so, what is the charge? (b) How much charge is on the
  23. Physics

    A Van de Graaff generator is a device for generating a large electric potential by building up charge on a hollow metal sphere. A typical classroom-demonstration model has a diameter of 30 cm. How much charge is needed on the sphere for its potential to be
  24. Science

    Like charges will... Attract Repel No Interaction Opposite charges will... Attract Repel No Interaction What is the standard unit of electric charge? Amperes (A) Coulombs (C) Newtons (N) Tesla (T) What subatomic particle carries a positive charge? What
  25. Physics

    A piece of aluminum is made with a cavity inside the aluminum. To find the volume of the cavity the piece of aluminum is weighed. In the air, the piece of aluminum has a mass of 29.1kg. In water, the piece of aluminum has an apparent mass of 16.2kg. What
  26. physic

    Consider a solid nonconducting sphere with a uniform charge density of ρ and a charge of -q, inside a conducting spherical shell which has a charge of -q. Suppose that R1=5 cm, R2=15 cm and R3=30 cm. Furthermore, suppose that q=3 nC. Find the charge
  27. Physics

    Review Conceptual Example 7 as background for this problem. Two charges are fixed in place with a separation d. One charge is positive and has twice (n = 2) the magnitude of the other charge, which is negative. The positive charge lies to the left of the
  28. Physics

    A piece of aluminum is made with a cavity inside the aluminum. To find the volume of the cavity the piece of aluminum is weighed. In the air, the piece of aluminum has a mass of 29.1kg. In water, the piece of aluminum has an apparent mass of 16.2kg. What
  29. Maths

    A hollow spherical metal ball has internal radius 1cm. If the metal is 1/2 cm thick, find the volume of metal ( Take pi equals 22/7)
  30. chemistry

    What is an ionic solid? A. One positive ion and one negative ion bonded to form a solid B. Many nonmetal atoms bonded together to form a solid C. Many positive and negative ions bonded to form a solid D. Many metal atoms bonded together to form a solid I
  31. Science

    A charged iron rod is brought near a metal ball that is mounted on an insulating pad. If the iron rod acquired negative charge, what must be the charge of the metal ball after charging?
  32. Physics

    A positive charge of 3.0e-6 C is pulled on by two negative charges. One, -1.9e-6 C, is 0.045 m to the north and the other, -3.7e-6 C, is 0.030 m to the south. What total force is exerted on the positive charge? F=kqq/d^2 You would have to find the F
  33. physics

    A conducting spherical shell with a total charge of +12.6 micro-coulombs has a point charge of -3.6 micro-coulombs placed at its center. The negative point charge will push the electrons in the spherical shell away from it. This will leave the inner shell
  34. Physics

    An infinitely long, solid insulating cylinder with radius a has positive charge uniformly distributed throughout it with a constant charge per unit volume p. a) using Gauss's law, derive the expression for the electric field inside the cylinder ra c)
  35. physics

    A hollow cylinder, a solid cylinder, a hollow sphere, and a solid sphere roll down a ramp without slipping, starting from rest. The ramp is 0.25 m high. All the objects have radius 0.035. What are their final speeds? Please show what equation you used and
  36. Physics

    The electric field at a distance of 0.150 m from the surface of a solid insulating sphere with radius 0.367 m is 1720 N/C . Assuming the sphere's charge is uniformly distributed, what is the charge density inside it? Calculate the electric field inside the
  37. Physics

    1. A hollow sphere and a solid sphere roll without slipping down two different ramps. They start at different heights. The speed and kinetic energy of each sphere is the same when they reach the bottom of their ramp. If the hollow sphere has mass 3.25 kg,
  38. Ion Charge & Formulas of Ionic Compounds

    Can you please take a look at my questions. Thank you very much. 1.classify the law of definite proportions. In specific proportions, A type of compound always contains the same elements. Is this good? Any other info would be greatly appreciated. 2.how do
  39. phisycal sciences

    Which of the following properties did Rutherford use in his experiment? A. the negative charge of the alpha particles and the random distribution of protons B. the negative charge of the alpha particles and the positive charge of the gold foil C. the
  40. physics 2

    In which case would electrical potential energy be built up and stored in the electric field? a A positive charge is moved toward a negative charge. b A positive charge is moved toward a positive charge. c A negative charge is moved away from a negative
  41. applied mechanics

    A solid shaft of 65mm outside diameter and a hollow shaft of 85mm outside diameter are connected by 6 bolts with the mean pitch of thread being 155mm. The shear stress due to the torque on the shafts is equal to the shear stress on the bolts. a) Find the
  42. Physics

    A solid shaft of 65mm outside diameter and a hollow shaft of 85mm outside diameter are connected by 6 bolts with the mean pitch of thread being 155mm. The shear stress due to the torque on the shafts is equal to the shear stress on the bolts. a) Find the
  43. applied mechanics

    A solid shaft of 65mm outside diameter and a hollow shaft of 85mm outside diameter are connected by 6 bolts with the mean pitch of thread being 155mm. The shear stress due to the torque on the shafts is equal to the shear stress on the bolts. a) Find the
  44. physic

    A solid shaft of 65mm outside diameter and a hollow shaft of 85mm outside diameter are connected by 6 bolts with the mean pitch of thread being 155mm. The shear stress due to the torque on the shafts is equal to the shear stress on the bolts. a) Find the
  45. Chemistry

    What is an ionic solid? A. One positive ion and one negative ion bonded to form a solid B. Many nonmetal atoms bonded together to form a solid C. Many positive and negative ions bonded to form a solid D. Many metal atoms bonded together to form a solid I
  46. Physics Gauss

    A long, thin straight wire with linear charge density -λ runs down the center of a thin, hollow metal cylinder of radius R. The cylinder has a net linear charge density 2λ. Assume λ is positive. Find expressions for the electric field at the following
  47. physics

    A long, thin straight wire with linear charge density -λ runs down the center of a thin, hollow metal cylinder of radius R. The cylinder has a net linear charge density 2λ. Assume λ is positive. Find expressions for the electric field at the following
  48. science question

    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 _______
  49. physics

    a positive point charge q sits at the center of a hollow spherical shell. The shell, with radius R and negligible thickness, has net charge -2q. find an expression for the for the electric field strength (a) inside the sphere, rR. in what direction does
  50. biology

    do birds have true cavity, false cavity, or no cavity?
  51. electrc field inside charged solid

    how can electric field exist inside a uniform charge solid... when by gauss law electric field is zero inside a conductor
  52. physics- still confused.

    A positively charged light metal ball is suspended between two oppositely charged metal plates on an insulating thread as shown below. After being charged once, the plates are disconnected from the battery. Describe the behavior of the ball. Thank you so
  53. [+] (+) [-] PHYSICS PRE-AP 11th GRADE

    A positively charged light metal ball is suspended between two oppositely charged metal plates on an insulating thread as shown below. After being charged once, the plates are disconnected from the battery. Describe the behavior of the ball. Could you
  54. physics

    A hollow steel shaft has an external diameter of 120 mm and is 10 mm thick. It is coupled to a solid shaft of the same material, 100 mm in diameter. If the length of the hollow shaft is 960 mm, find the length of the solid shaft, so that the total angle of
  55. Physics

    Inside a metal conductor, why is it not possible to have a static charge configuration if there is a net electric field?
  56. 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 _______
  57. physics

    During a violent electric storm, a car is struck by a falling high-voltage wire that puts an excess charge of 850 uC on the metal car. (a) how much of this charge is on the inner surface of the car? (b) How much is on the outer surface? ok...I didn't think
  58. physics

    Two charges are fixed in place with a separation d. One charge is positive and has nine times (n = 9) the magnitude of the other charge, which is negative. The positive charge lies to the left of the negative charge. Relative to the negative charge, locate
  59. 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)
  60. Physics _ Please please help

    A hollow brass cylinder is weighed on a pan balance (kitchen scale) which read in kg. The scale reading is 5.56 kg. The brass cylinder is now removed from the scale and is replaced by a beaker of liquid density 1.56 * 10^3 kg/m^3; the scale now reads 17.50
  61. Physics

    A small metal bead, labeled A, has a charge of 26 nC . It is touched to metal bead B, initially neutral, so that the two beads share the 26 nC charge, but not necessarily equally. When the two beads are then placed 5.0 cm apart, the force between them is
  62. Physics

    Two tiny spheres, one with a charge of -17mc and the other with a charde of +3mc are positioned with the positive charge 14cm above the negative. What is the magnitude and direction of the force on the negative charge?
  63. physics

    Do electrons (as a charge) really flow in a conductor or only energy is transfered through waves? Suppose a metal,copper is taken as a conductor, now when electrons from the metal towards the negative terminal of the battery, the conductor should get
  64. Chemistry

    A calorimetric determination of specific heat and enthalpy of solution was performed. How would each of the following procedural changes affect (higher than the correct value, lower than the correct value, or no change) the value of the specific heat of
  65. Science

    Use the following values for mass and charge: an electron has mass me = 9.11×10-31 kg and charge -e, a proton has mass mp = 1.67×10-27 kg and charge +e, an alpha particle has mass malpha = 6.65×10-27 kg and charge +2e, where e = 1.60×10-19 C. An
  66. Science

    Use the following values for mass and charge: an electron has mass me = 9.11×10-31 kg and charge -e, a proton has mass mp = 1.67×10-27 kg and charge +e, an alpha particle has mass malpha = 6.65×10-27 kg and charge +2e, where e = 1.60×10-19 C. An
  67. PHYSICS

    A hollow brass cylinder is weighed on a pan balance (kitchen scale) which read in kg. The scale reading is 5.56 kg. The brass cylinder is now removed from the scale and is replaced by a beaker of liquid density 1.56 * 10^3 kg/m^3; the scale now reads 17.50
  68. physics

    In the figure above, the negative charge has a magnitude of 40.0 nC (and lies inside the doughnut shape) and the positive charge has a magnitude of 99.0 nC. What is the flux through the doughnut surface?
  69. physics

    "A solid cylinder and a thin-walled hollow cylinder have the same mass and radius. They are rolling horizontally along the ground toward the bottom of an incline. They center of mass of each cylinder has the same translational speed. The cylinders roll up
  70. physics

    "A solid cylinder and a thin-walled hollow cylinder have the same mass and radius. They are rolling horizontally along the ground toward the bottom of an incline. They center of mass of each cylinder has the same translational speed. The cylinders roll up
  71. Physics

    A solid metal ball and a hollow plastic ball of the same external radius are released from rest in a large vacuum chamber. When each has fallen 1 m, they both have the same 1. momentum. 2. inertia. 3. speed. 4. change in potential energy. 5. kinetic
  72. physics

    A metal sphere with a charge of +25 x 10-9 C is placed 2 m away from another metal sphere which carries a charge of +10 x 10^-9 C. What is the magnitude and direction of the electric force between the two metal spheres?
  73. Physics

    A positive charge +q1 is located to the left of a negative charge -q2. On a line passing though the two charges, there are two places where the total potential is zero. The first place is between the charges and is 4.03 cm to the left of the negative
  74. Chemisry

    You conduct an experiment where you use a single battery with a charge capacity of 900 mAh to precipitate an unknown metal from a salt solution that was leaking from an old battery. You use a vast excess of the salt, so the amount of metal condensed is
  75. Physics

    I have been unable to find text references for this material in my book: The problem gives me two spheres, Sphere A has unevenly distributed negative charges, Sphere B has negative charges distributed almost evenly near the edge of the sphere, forming a
  76. Physics

    A positive charge +q is located to the left of a negative charge -q. On a lne passing through the two charges there are two places where the total potential is zero. The first place is between the charges and is 3.8 cm to the left of the negative charge.
  77. Physics

    A mass M of solid metal at temperature T is put into 3.0kg of water which is initially at 90◦C. The metal and water are placed in an insulated container. The specific heat for water is 4186 J kg K . The metal has a melting point of 60◦C. The latent
  78. Physics PLs DAMON HELP

    A thick metal slab carries a current I as shown. A uniform magnetic field B points perpendicular to the slab (and into the page). If point P on the slab is at a higher potential than point Q , what can we say about the charge carriers that produce the
  79. Physics

    The direction of an Electric Field is the direction a negative test charge will move in the field a positive test charge will move in the field either a positive or a negative test charge will move in the field*** the test charge may be either negative or
  80. physics # 4

    For the following question rank the objects in order from greatest to least. 4. Which object would be the most difficult to begin spinning about its center of mass? a.) Solid sphere b.) Hollow sphere c.) Hallow cylinder d.) Solid disk e.) Solid cylinder
  81. Physics

    In a crystal of salt there are electrons and positive ions. How does the net charge of the electrons compare with the net charge of the ions? 1. Unable to determine 2. Sometimes the net charge of the negative electrons is greater than the net charge of the
  82. physics

    A parallel-plate capacitor is formed from two 1.0{\rm cm} \times 1.0{\rm cm} electrodes spaced 2.8{\rm mm} apart. The electric field strength inside the capacitor is 1.0\times10^{6}{N/C}} part a What is the charge (in {\rm nC}) on positive electrode? part
  83. Chemistry

    Hello everybody, I'm having difficulty understanding the rationalization behind the strengths of Bronstend Lowry acids and bases and my textbook isn't too helpful. Can someone please expalin to me: (1) What exactly is effective negative charge density? (2)
  84. Solid Mechanics

    Determine the ratio of strenghts of a solid steel column to that a hollow column of the same material and having the same cross sectional area. The internal diameter of the hollow column is 1/2 of its external diameter. Both the columns are same length and
  85. physics

    why should spare petrol for cars be carried in a metal rather than plastic container? Explain why the inside of the car is a safe place during a thunderstorm. calculate the charge on 4.0 * 10^20 protons.
  86. Algebra 1

    A metal stays solid at fahrenheit tempeture below 1718.1. Determine in (in term of an inequality) those celsius temperatures for which the metal stays solid. Use the formula f=9/5c+32. Thank you, again.
  87. Chemistry Plz hurrry

    What are charateristic of a ionic bond and a chemical bond? An ionic bond is a type of chemical bond that involves gain or loss of valence (outer shell) electrons in order to attain stability. That is not what I am looking for but thanks anyway An ionic
  88. Physics

    A thick metal slab carries a current I as shown. A uniform magnetic field B points perpendicular to the slab (and into the page). If point P on the slab is at a higher potential than point Q , what can we say about the charge carriers that produce the
  89. coulomb law and gauss law Physics

    Two negative particles of charge=-Q and mass=rn orbits a stationary, positive particle of charge=+2Q at a radius= R' They are always at diametrically opposite points on the orbit. a. Find the total inward Coulomb force on one negative particle. b. Write
  90. Math

    Can someone please help me with an algebra problem? -|4-8b|=12 I really get confused with the absolute value symbols and a negative sign outside of them. Don't worry about it; it does tend to be a bit confusing. I'll explain the difference between inside
  91. science

    Which of the following is an example of heterogeneous catalysis? A. Ethylene and hydrogen gases are adsorbed onto the surface of a metal catalyst to accelerate the formation of ethane. B. An enzyme catalyzes a biochemical reaction that produces the alcohol
  92. physics

    Three equal positive point charges of magnitude Q = 4.00ì C are located at three corners of a square of edge length d = 6.9 cm. A negative charge -14.00ì C is placed on the fourth corner. At the position of the negative charge, what is the magnitude of
  93. physics

    Three equal positive point charges of magnitude Q = 8.00ì C are located at three corners of a square of edge length d = 11.8 cm. A negative charge -24.00ì C is placed on the fourth corner. At the position of the negative charge, what is the magnitude of
  94. science

    Which cavity consists of the cranial cavity and vertebral canal? the dorsal or the ventral?
  95. Biology

    Describe the features of the nasal cavity that moisten, clean, and warm the air as it passes through this cavity on its way to the lungs.
  96. 3 physics question please help quick

    Two point charges of opposite sign are brought close together. Which statement best describes the field lines of the combined point charges? (Points : 1) The field lines from the positive charge point toward the negative charge. The field lines from the
  97. Physics

    The voltage between the two plates inside of the air cleaner is 500 V. A soot particle whose mass is 10-12 kg and carries a charge of -1.0 x 10-11 C of charge enters the air cleaner. What will be the velocity of the soot particle as it moves from the
  98. physics

    The voltage between the two plates inside of the air cleaner is 500 V. A soot particle whose mass is 10-12 kg and carries a charge of -1.0 x 10-11 C of charge enters the air cleaner. What will be the velocity of the soot particle as it moves from the
  99. Intro T Electrical Engineering

    A solid metal sphere with radius 0.430{\rm m} carries a net charge of 0.210{\rm nC} . Find the magnitude of the electric field at a point 0.112{\rm m} outside the surface of the sphere. Find the magnitude of the electric field at a point inside the sphere,
  100. Physics

    An electroscope is a simple device consisting of a metal ball that is attached by a conductor to two thin leaves of metal foil protected from air disturbance in a jar. When the ball is touched by a charged body, the leaves that normally hang straight down,

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