21.63 A small 13.0g plastic ball is tied to a very light 27.2cm string that is attached to the vertical wall of a room. A uniform horizontal electric field exists in this room. When the ball has been given an excess charge of -1.10μC, you observe that it remains suspended, with the string making an angle 17.4° with the wall. Find the magnitude and direction of the electric field in the room. 17.4°

Q: A 8.20 μC charged 1.00 g cork ball is suspended vertically on a 1.100 m long light string in the…

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Q: You attach a 11-g plastic ball to a 20. cm string, the other end of which is taped to a wall. You…

A: Apply Newton’s second law in the vertical direction

Q: C

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Q: A small object of mass 3.78 g and charge −17.8 ?C is suspended motionless above the ground when…

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Q: small 12.5 g plastic ball is tied to a very light 28.4 cm string that is attached to the vertical…

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Q: A ball of 0.39 g and positive charge q=41 uC is suspended on a string of negligible mass in a…

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Q: Find the dot product of the vectors A = 5m and B = 7m perpendicular to each other. A) 5 B) 8…

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Q: A small object of mass 3.60 g and charge −18.5 ?C is suspended motionless above the ground when…

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Q: A pendulum consists of an insulating spherical mass m = 600.0g and a massless (very light)…

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Q: A small object with a 3-C charge is accelerating horizontally on a friction-free surface at 0.0046…

A: Charge of small object, Q = 3 C Acceleration, a = 0.0046 m/s2 Mass of object, m = 6 g = 0.006 kg

Q: Consider a small sphere of mass m=0.471 kg and charge q=-20.0 µC suspended by a light string as…

A: Draw the free-body diagram of the sphere.

Q: A long, thin rod parallel to the y-axis is located at x = -3.0 cm and carries a uniform linear…

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Q: A piece of aluminum foil of mass 5.0x10-2 kg is suspended by a piece of string in an electric field…

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Q: A small object of mass 4.00 g and charge  −17.3 μC  is suspended motionless above the ground when…

A: Since the object is motionless, the net force on it must be zero. The forces acting on the object…

Q: A charged polystyrene ball of mass m = 10.0 g is hanging from the ceiling by a piece of string with…

A: Consider the FBD of the polystyrene ball is given below.

Q: A bullet of mass mb is fired horizontally with speed vi at a wooden block of mass mw resting on a…

A: Part A The bullet gets completely embedded into the block. So, the collision is completely…

Q: A charged cork ball of mass 1.90 g is suspended on a light string in the presence of a uniform…

A: Given  m = 1.9 g Angle  of string with verticle is 37°

Q: A 1.00-g cork ball having a positive charge of 2.00 mC is suspended vertically on a 0.500-m-long…

A: (a). the acceleration is

Q: A 8.20 μC charged 1.00 g cork ball is suspended vertically on a 1.100 m long light string in the…

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Q: An alpha particle (a helium nucleus) is traveling along the positive x-axis at 1025 m/s when it…

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Q: thin pressure of glass is bent into a semicircle of radius R. A charge +Q is distributed evenly…

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Q: Two very long (nearly infinitely long) wires run parallel to each other and perpendicular to the…

A: Given: ​

Q: Two light spheres each of mass 2.0g are suspended by light strings 10cm in length. A uniform…

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Q: A small 12.0 g plastic ball is tied to a very light 25.7 cm string that is attached to the vertical…

A: Mass, m = 12 g = 12×10-3 kg = 0.012 kg Length, l = 25.7 cm  Charge, q = -1.20 µC = -1.20×10-6 C…

Q: Two 1.50-g spheres are suspended by 11.5-cm-long light strings (see the figure). A uniform electric…

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Q: Consider a small sphere of mass m-0.153 kg and charge q=-20.0 µC suspended by a light string as…

A: Given: The mass of the sphere is 0.153 kg. The charge on the sphere is -20.0 μC. The magnitude of…

Q: A small block of mass m ancd charge Q is placed on an insulated, frictionless, inclined plane of…

A: Given  Mass of block m=5.4 ×10-3 kg Charge Q=-7.00 µC Ɵ = 25.0˚

Q: A line charge with a uniform line length of 0.162 m and uniform line charge density of 8.52X10^-6…

A: Given :     Length of the line charge, L=0.162 m     Uniform line charge density, λ=8.52×10-6 C m-1…

Q: Two small metallic spheres, each of mass m = 0.40 g, are suspended as pendulums by light strings…

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Q: Two light spheres each of mass 2.0g are suspended by light strings 10cm in length. A uniform…

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Q: A proton is fired horizontally into a 1.0 × 105 N/C vertical electric field. It rises 1.0 cm…

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Q: What is the horizontal component of the electric field at location L?

A: Given, A straight conducting rod carries an electric charge of 6.63 nC. Length of rod, L = 8 cm  Let…

Q: Two light spheres each of mass 2.0g are suspended by light strings 10cm in length. A uniform…

A: Mass of sphere,Electric field,Length of string,

Q: A ball is attached to a filament of length L = 25.0 cm and suspended from the ceiling, as shown in…

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Q: A small object of mass 0.0150 kg and charge 3.1 µC hangs from the ceiling by a thread. A second…

A: We must calculate the electric field caused by the lower charge at the location of the upper charge.…

Q: A small object of mass 3.70 g and charge −19.6 ?C  is suspended motionless above the ground when…

A: Force on charge particle in electric field F=qE

Q: Problem 13:   An electron has an initial velocity of 5.15 × 106 m/s in a uniform 1.9 × 105 N/C…

A: A)The distance travelled before coming to rest is3.9×10−4mB)The time taken the electron to come to…

Q: A small object of mass 3.46 g and charge  −19.9 ?C is suspended motionless above the ground when…

A: We have givenMass of object (m)=3.46 g=3.46×10-3 kgand charge  (q)=-19.9 μCletE= magnitude of…

Q: A non-conducting pith ball is suspended on a 30.0-cm long cord. A horizontally oriented, uniform…

A: Given : Mass of pith ball = 5.00 g             Charge (q) =1.00 μC

Q: A small object of mass 3.50 g and charge −17.9 μC is suspended motionless above the ground when…

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.