The statement “if the electric field does positive work on a charge, the potential energy of the system decreases” is true if The charge is positive The charge is either positive or negative The charge is negative

Q: What is the angular velocity of the earth in rad/s? W=?

A: Given data :- Time period T = 24 hours = 24 × 3600 s = 86400 s

Q: ven a thin, nonconducting sheet with +12 µC of charge and dimensions of 14 cm x 25 cm, find the elec...

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Q: 1 500 J of work are required to carry a charged particle between two points with a potential differe...

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Q: Two point charges are on the y axis. A 5uC charge is located at y = 1.5cm and a -2.5uC charge is loc...

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Q: For an object of 1kg mass to escape the gravitational force of the earth, the kinetic energy imparte...

A: the formula for kinetic energy can be represented by  K.E = 12m.v2 where m= mass of body (1kg) v = v...

Q: A Van de Graaff generator is charged so that the magnitude of the electric field at its surface is 3...

A: Given in question: Electric field(E) = 3.0×104 N/c  To find:  (a) the electric force exerted on a pr...

Q: A Styrofoam® ball covered with a conducting paint has a mass of 5.0 × 10−3 kg and has a charge of 4....

A: Determine the weight of the ball.

Q: Three capacitors are connected in parallel and have the following voltage ratings: C1 = 32 uF with 8...

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Q: A 3.6-volt battery is used to operate a cell phone for 5.0 minutes. If the cell phone dissipates 0.0...

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Q: 10. A rollercoaster is at the inside top of a a circular loop of radius R=150m. How fast must the ro...

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Q: Interference patterns do not have an infinite number of lines, hence there is a limit to the diffrac...

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Q: Practice Problem Find Rab for the circuit shown: 201 202 182 12

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Q: Find the vector force F on Q1 = 0.35 mC at (0, 4, 0)m due to Q2 = - 0.55 mC at (3, 0, 0)m.

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Q: A 5.80 μF , parallel-plate, air capacitor has a plate separation of 5.00 mm and is charged to a pote...

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Q: parallel-plate capacitor is being charged by a battery. After being fully charged, the capacitor rem...

A: A capacitor is being charged by a battery. After being fully charged, the capacitor remains connecte...

Q: A current of 4A produces a deflection of 30° in the galvanometer. The figure of merit is (b) 7.6 A/r...

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Q: A small stone slung by David toward Goliath moves in a straight line under the influence of a force ...

A: Given data:  The force vs position graph Required: The work done on the stone from 0 m to 6 m

Q: A force P is applied to a small wheel that can move freely on a light wire. Show that there is equil...

A: Draw the free-body diagram of small wheel.  

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Q: The   density and   resistivity of a cubic   metal of mass m=81 g are    d=3 g/cm3 and ρ=1.5 x 10-8...

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Q: Two boxes full of legal documents are connected by a massless string which goes over an ideal pulley...

A: Mass of box A m1=100 kg which is sliding on an inclined floor of 25o having coefficient of friction ...

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Q: parallel-plate capacitor is connected to a 2-volt battery. If the plate separation is doubled while ...

A: If battery remains connected potential difference remains same.

Q: How do you compute for the equivalent capacitance (Ceq) of two capacitors (C1 and C2) which are conn...

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Q: An airplane accelerates down a runway at 4.12 m/s? for one minute until it finally lifts off the gro...

A: Given in question: Acceleration of airplane(a) = 4.12 m/s2                                 Time(t) =...

Q: A uniform disc of radius R and mass m is connected to a wall by string oflength 2R. The normal react...

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Q: A spherical conductor has a radius of 8 mm and a charge of 20µC. Calculate the electric field at r =...

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Q: Two blocks each of mass m are fastened to the top of an elevator as in the figure below. The elevato...

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Q: Erik and Manuel drive at a compass heading of 270 west of south for 18 km to Trece Martires, then di...

A: Resultant of two or more than two vector can be determined by resolving the vectors into its compone...

Q: The statement "if the electric field does positive work on a charge, the potential energy of the sys...

A: If field as positive work means q( E.r)= positive. The charge move along the direction of field.

Q: 3. Find the area of the portion of the semi-circle excluding the triangle's area. 10 16

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Q: .7 Questions: Is there any 'Voltage Law' for nodes? If so, what is it? Is there any 'Current Law' fo...

A: 1. Yes there is Voltage law for nodes voltage. Voltage method is used to calculate the current in ci...

Q: For an object sliding down a frictionless inclined plane, starting from rest, it is not hard to use ...

A: We know that the law of conservation of energy is defined as it never be created nor be destroyed it...

Q: A A more hme fires 14 bullets s, each gun t mags 18 1,the speed to each bullets is .26 em5Then foace...

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Q: In blood transfusion, flow rate is to be 1.00 x 10-6 m3/s. The pressure at the entrance of the needl...

A: Write the expression for the flow rate. Here, ΔP is the pressure difference, r is the radius of the...

Q: A 5.6 kg block is travelling rightwards with speed 12.8 m/s. It collides with 3.2 kg which is travel...

A: mass of first block (m) = 5.6 kg initial velocity of first block (u) = 12.8 msmass of second block (...

Q: If 500 J of work are required to carry a charged particle between two points with a potential differ...

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Q: 4- 7. Components of the Vector and Unit Vectors. Given: A = (3î – 3j)m B = (i – 4j)m ċ = (-2î + 5j)m...

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Q: 9. A block of material has mass density, p. A second block of equal volume has three times the mass ...

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Q: Under normal conditions a tennis ball has a diameter of 6.6 cm, but when a 90 kg professor stands ba...

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Q: Two capacitors in series, C1= 9.0 uF and C2= 5.0 uF, are connected to a 12.0 V battery. What is the ...

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Q: Exercise 1: Using Ohm's Law. (R = V/I) Data Table 1 Voltage (V) Current (mA) 0.5 1.2 1.0 2.5 1.5 3.7...

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Q: A spherical conductor has a radius of 8 mm and a charge of 20pC. Calculate the electric potential at...

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Q: 5. Find the total resistance of eight resistors below: R1 = 10 N, R2 = 2 N, R3 = 3 N, R4 = 17 N, Rs ...

A: Given data-                         R1 = 10 Ω, R2 = 2 Ω, R3 = 3 Ω, R4 = 17 Ω, R5 = 20 Ω, R6 = 20 Ω, ...

Q: Two capacitors of 2.0 and 4.0 mF are connected in parallel. This group is connected in series with a...

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Q: Problem: Spiderman uses his spider webs to save a 150,000-kg runaway train moving about 17 m/s. Assu...

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Q: 5. Given a charged cylinder of +10 µC, a diameter of 1.5 cm, and a length of 10 cm, solve for the fo...

A: Electric field is defined as force per unit charge. For point charge it is given as E = kq/r2 To sol...

Q: Two parallel conducting plates are separated by 10.0 cm, and have an area of 1200 cm2. One of them i...

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Q: What must be the acceleration of a train for it to stop from 12.0 m/s at a distance of 52 m? 1.38 m/...

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Q: 4. A box weighing 2.5 N rests on the table. (Coefficients of static and kinetic friction are 0.60 an...

A: The weight of the book = 2.5 N The coefficient of static friction = 0.6 The coefficient of kinetic f...

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.