Physics question and answers for January 21, 2024
- Q Electric Field. Find the electric field between two oppositely charged parallelmetal (capacitor) plates. The charge on a capacitor plate is Q = 20 ?C. The areaof each plate is 2.5...
- Q The metal plate on the left in fig. carries a surface charge of + per unit area. The metal plate on the right has a surface charge of -20 per...
- Q A uniform electric field is oriented in the -z direction. The magnitude of the electric field is 6500 N/C.(a) How will the equipotential surfaces associated with this electric field be...
- Q The equipotential surfaces surrounding a point charge are concentric spheres with the charge at the center. If the electric potential of two such equipotential surfaces that surround a point charge...
- Q A round storm cell covers an area with a diameter of 1km. The clouds that make up the cell range in altitude from 867mto 5309m. The clouds are charged negative...
- Q 8. A metal sphere as a charge of +2.3 x 10-6C and lies 2 meters away from another metal sphere of unknowncharge. If the attractive force present between the spheres...
- Q An electron is separated from another point charge by a distance of 5 centimeters. Theelectrostatic force between them is -9.24 x 10-26 C. What is that point charge?(Coulomb's constant is...
- Q In the image below, you have a before and after case.. Initially q1 and q2 are closer together (top image). The charge q1 is being held stationary and is not...
- Q As an electron moves in the direction the electric field lines1.it is moving from low potential to high potential and gaining electric potential energy.2.it is moving from low potential to...
- Q Two small Styrofoam balls that are separated (between their centers) by 4 cm experience a force of attraction of 15 N. If the balls are separated by 8 cm, the...
- Q A charge Q=1.2 C sits somewhere inside a cube of side length 1 = 3.7 cm.
- Q A droplet of ink in an ink-jet printer contains a charge of 1.5 x 10^-10 C. It experiences a force to put it on a piece of paper of 1.0...
- Q A large, flat, horizontal sheet of charge has a charge per unit area of 30 pC/m^2. The magnitude of the electric field just above the middle of the sheet equals:a....
- Q Three point charges q1 = 21 x 10-6 C, q2 =28 x 10-6 C and q3 = -10 x 10-6 C are arranged as shown in figure below. If separation...
- Q An electron with a charge value of 1.6 x 1019 C is moving in the presence of an electric field of 400 N/C. What force does the electron experience?Select one:a....
- Q Place the letter of the diagram that best represents the charge on an electroscope during each of the procedures described.A positively-charged rod is brought near a positively-charged electroscope.A positively-charged rod...
- Q A point charge of q? = 4.00 x 10^-5C is separated by a distance of 1.0 m from a second negativepoint charge of q2 = -5.00 x 10^-5 C. What...
- Q A -0.06 C charge that moves downward is in a uniform electric field with a strength of 200 N/C. What is the magnitude and direction of the force on the...
- Q Ink-jet printers spray charged drops of ink onto paper. An electric field in the printer head produces a force on the ink drops. (a) Find the electric field strength that...
- Q Gordon, the night custodian, dusts off a classroom globe with a feather duster, causing the globe to acquire a charge of -6.0 x 10-? C. What is the magnitude and...
- Q A positive charge of 2.0 C and a positive charge of 3.0 C are separated by 80 m. What is the magnitude of the force between the two charges?a 5.4...
- Q What is the electrostatic force between the balloon with a charge of +5.70x10^-5 C and a comb with a charge of -2.5x10^-4 C if they are separated by a distance...
- Q If two identical charges are brought to within 35 m of each other experience an electric force 1.54 x 10?N. What is the value of their charge?
- Q A proton is moving away from a fixed proton attached to a piece of metal in interstellar space and the proton moves a distance of 2000 m. What work was...
- Q What is electrostatic force between a 55.0-nC charge and a 3720-?C charge that are 0.125-m apart?
- Q 35. A balloon becomes negatively charged when it is rubbed by a piece offur. Then it is placed on a wall and appears to be attracted to the wall.Which of...
- Q 36. A particle with a charge of 2.0 x 10^-4 is placed r meters from anotherparticle with charge q. Which of the following would result in the greatestelectrostatic force?A.q=4.0 x...
- Q A 2.6 mm -diameter sphere is charged to -4.6 nC. An electron fired directly at the spherefrom far away comes to within 0.37 mm of the surface of the target...
- Q A beam of particles enters a uniform electric field, as shown below. The beam consists of thefollowing particles: Particle 4, with mass m and charge +q, particle B. with mass...
- Q Anegatively-charged balloon is brought near to a neutral, conducting sphere. When it is held near, what does the charge distribution on the metal sphere look like?
- Q An atomic nucleus contains 56protons, for iron. Which force wouldthis nucleus apply on an electron at adistance of 10x10^-12 m? A. 0.65 x 10^-4 NB. 0.02 10^-4 NC. 1.3 x...
- Q A positive charge is located at x = 0.When a negative charge is placed at x= 10 cm, what happens to the electricfield lines between the charges? *A. The electric...
- Q A proton and an electron are placed in a uniform electric field in empty space. The particles are placed very far apart, so neither feels the effect of the other....
- Q A conductor has no charge initially. A positively charged rod is brought near, but not touching, the left side of the conductor. The right side of the conductor is then...
- Q An insulating rod carries + 2.0 Nc of charge. After rubbing it with a material, you find it carries -3 Nc of charge. How much charge was transferred to it?A....
- Q 12. A proton is placed in a uniform electric field of 2.75 x 10 N/C. Recall that a proton has a charge of 1.60 x 10-? C and a mass...
- Q A constant electric field is (4.5 x 10^5 N/C)?. In which direction is the force on a -20 nC charge placed in this field? A. The direction of the force...
- Q Two plastic spheres with uniform charge repel each other with a force of 10 N. If you remove the charge from one sphere, what will be the force between the...
- Q An electron (charge -e) is located at a distance r away from a carbon nucleus (charge +6e). Which of the following statements is true about the relative force magnitude between...
- Q What rule can you develop for the direction of the electric field due to positive and negative charges? Electric field lines always point away from a charge Electric field lines...
- Q In Newton's law of universal gravitation, the force between two masses is proportional to the product of the two masses. What plays the role of mass in Coulomb's law? A....
- Q Two particles with equal charge experience a force of 10 nN when they are 30 cm apart. What is the magnitude of the charge on each particle? A. -5.8 10^-10...
- Q How is the charge of the proton related to the charge of the electron? A. The magnitudes of charge of the proton and the electron are equal, but the charge...
- Q When a negative charge is released from rest and moves along an electric field line, it movesto a position of:a) lower potential and lower potential energyb) lower potential and higher...
- Q 8. Two conducting spheres, sphere A with radius R and charge Q, and sphere B with radius 3R and charge 7/3 Q, are separated. By connecting these two spheres by...
- Q A charged wooden stick is balanced on a pivot so it can rotate freely. If an uncharged metal rod is brought close to the charged end of the stick, the...
- Q There are very large numbers of charged particles in most objects. Why, then, don't most objects exhibit static electric effects?A. Most objects are neutral.B. Most objects have positive charge only.C....
- Q Four charges, each with charge, q, are placed at the corners of a rhombus. A fifth charge, with charge -4q, is placed at the center of the rhombus. Determine the...
- Q Suppose you are near an electrical box than warns about high voltage. It mentions voltages of up to 2000 V can be found inside the box. The box is shielded...
- Q The figure shows a uniformly charged thin rod of length Z that has a total charge Q. The charge is uniformly distributed along the rod. Determine an expression for the...
- Q A small metal ball with a mass of 4.0 g and a charge of 5.0 mC is located a distance of 0.70 m above the ground in an electric field...
- Q An electron has an initial speed of 6.83 x 10^6 m/s in a uniform 5.98 x 10^5 N/C strength electric field. The field accelerates the electron in the direction opposite...
- Q 2) Can we produce an electric field in which the electric field lines are parallel and equally spaced? If so, please describe how this can be done. (1 point)
- Q What is the electric field produced at a point P above the center of a solid cylinder with volume charge density of p? Point P is located along the z...
- Q 19. Three identical particles, each possessing the mass m and charge + q. are placed at the corners of an equilateral triangle with side ro. The particles are simultaneously set...
- Q 11. The metal knob of a gold leaf electroscope is touched with a positively charged rod. When it istaken away the leaves stay separated. Now the metal knob is touched...
- Q If two charges move four times further apart, their electrostatic force changes by a factor of:Select one:a. 1/4b. 16c. 1/16d. 4
- Q What is the potential difference between two plates that are located 0.55 m apart? Assume the magnitude of the electric field between the two plates is 5.39 x 10^6 N/C.Select...
- Q On the x-axis, a charge -2Q and a charge +Q are fixed at the origin and x-1 meter position respectively. If a test charge +q is also placed in the...
- Q 21.11. Two very small 8.55-g spheres, 15.0 cm apart from cen- ter to center, are charged by adding equal numbers of electrons to each of them. Disregarding all other forces,...
- Q Two flat, parallel electrodes 2.5 cm apart are kept at potentials of 30 V and 45 V.Estimate the electric field strength between them.
- Q In a certain region of space, the electric potential is V (x, y, z) = Axy-Ba+ Cy, where A, B, and C are positive constants. For related problem-solving tips and...
- Q A parallel-plate air capacitor with a capacitance of 253 pF has a charge of magnitude 0.138 ?C on each plate. The plates have a separation of 0.316 mm.What is the...
- Q Two identical air-filled parallel-plate capacitors C? and C2 are connected in series to a battery that has voltage V. The charge on each capacitor is Qo. While the two capacitors...
- Q Show all work; FBD where appropriate. May have to look up constants such as masses of subatomic particles4. Three identical point charges of 2.0 C are placed on the x-axis....
- Q A uniform magnetic field is present in a cylindrical region. It starts changing at a constant rate. A conducting wire loop is placed symmetrically as shown.A. Electric field in the...
- Q A flexible spherical shell of radius R with uniformly distributed charge q is expanded to a radius 2R. The work performed by the electric force in this process is equal...
- Q In a certain region of the space the electric field at a point whose position vector is 7 is given by E(r)=, where a = 180 Nm/C. How much electric...
- Q Two idendical metallic balls of radius a are placed in ahomogeneous poorly conducting medium with resistivity p. If the distance between balls is much larger than their size and balls...
- Q A point charge of -3.00 ?C is located in the center of a spherical cavity of radius 6.50 cm inside an insulating spherical charged solid. The charge density in the...
- Q Four identical metal spheres initially have the following charges on them: QA = -6 C, QB = +3 C, Qc = -4 ?C, and QD = +7 ?C. Spheres A...
- Q Two very long uniform lines of charge are parallel and are separated by 0.480 m. Each line of charge has charge per unit length +4.80 ?C/m.What magnitude of force does...
- Q (a) Find the electric potential difference VB - VA due to a point charge 91 = -2.92 nC that is 0.200 m from location A and 0.470 m from location...
- Q Two concentric conducting spheres are uncharged, and in the space between them, at a distance L from the centre, a point charge Q is fixed. The radius of the inner...
- Q Consider a dipole made up of charges 2.5 C and -2.5 C kept at (0.125 mm, 0, 0) and (-0.125mm, 0, 0) respectively. Find the magnitude of the electric field...
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