Two identical metallic spheres are suspended as bobs of a simple pendulum. Each of the bobs has a charge of -10.23x10^-9 C. If each string is 1m long and makes an angle of 12 degrees to the vertical, (a) what is the electric force between the spheres? (b) The bobs touched each other and then separated. What then is the electric force between the spheres?

Q: The earth's magnetic field, with a magnetic dipole moment of 8.0 × 1022 A m2 , is generated by curre...

A:

Q: A) A 1.2 kg block slides down a frictionless incline with a slope angle of 42°, starting from a heig...

A: Mass of the block m=1.2 kg, angle of slope is 42o, height from the block slides down h=3.2 m and spr...

Q: A force of a (5 lb) is found to stretch a screen door spring (6 in). What is the potential energy of...

A: Given value--- Force = 5lb at x = 6 in . stretches = 18 in . We have to find--- potential energy?

Q: A meter stick balances horizontally on a knife-edge at the 50.0 cm mark. With two 4.10 g coins stack...

A:

Q: Formula: D = 1/F *1 – meter; 40 – inches; 100 – centimeters; 1,000 – millimeters Please answer a, ...

A: Part (a) Given data: The focal length of lens is F=16 cm.  

Q: The energy represent the product of one -half the mass of the body and the .square of its velocity i...

A: (1) False , The product of half the mass of body and square of it's velocity is known as kinetic ene...

Q: The moment vector is perpendicular containing the force

A: Moment vector is perpendicular containing the force 

Q: Q7: A circuit connected to an ac source of emf e= e, sin(100 t) with t in seconds, gives a phase dif...

A:

Q: The angular elevation of a tower CD at a place A due south of it is 60°; and at a place B due west o...

A:

Q: 3. A beta particle is an electron emitted by the atomic nucleus during radioactive decay. a. True b....

A:

Q: The product of the displacement and the component of the force in the direction of the displacement ...

A:

Q: 4. Calculate the mass of a body to which a force of 671 N will have to be applied so that it can acc...

A: Given data :             Applied force , F = 671 N             Acceleration, a = 32.2 m/s2 Formula :...

Q: You are driving along Lawrence Ave. at 60 km/h. You see the traffic light ahead is still green and d...

A:

Q: 1. Oscar throws a ball toward a wall with a speed of 25 m/s at an angle of 40 degrees above ground. ...

A: Given, initial speed of the ball, u = 25 ms angle at which it projects, θ= 40° wall is at, R = 22 m ...

Q: Q12: In a collinear collision, a particle with an initial speed V,strikes a stationary particle of t...

A:

Q: QI1:ln figure, the magnitude of Fy is equal - if £ fy-0. a: 200 sin 0 b: 200 cos 0 c:300 - 200 sin 0...

A:

Q: Two identical brass balls mounted on wooden posts initially have different amounts of charge: one −7...

A: Given  Q1  = -7 micro Coulomb  Q2 = -21 micro Coulomb   We know that , when  two conducting charged ...

Q: .A parallel circuit has 3 resistors each on different paths connected to a 120 V potential differenc...

A:

Q: In the figure, two long straight wires at separationd-21.8 cm carry currents of i -5.54 mA and iz = ...

A: Given data: The distance between the wires is d=21.8 cm. The current in wire 1 is i1=5.5 mA. The cu...

Q: Three cells of emf 2-0 V, 1-8 V and 1-5 V are connected in series. Their internal resistances are 0-...

A:

Q: A student wants to calculate the density of the two objects shown in the figure below.

A: Density = mass /volume 

Q: A) A1.2 kg block slides down a frictionless incline with a slope angle of 42", starting from a heigh...

A:

Q: The velocity of oil in a supply line changes from 5.1 to 6.3 ft3/s when going from a large bore to a...

A:

Q: The loaded cab of an elevator has a mass of 4.70 × 103 kg and moves 191. m up the shaft in 24.0 s at...

A:

Q: The resultant of the two forces has a magnitude of 650 lb. Determine the direction of the resultant,...

A: Given:R = 650lbP =?Q=500lband θR=60°

Q: A horseshoe player releases the horseshoe at A with an initial speed vo = 39 ft/sec. Determine the r...

A:

Q: SITUATION: A projectile is fired upward to the right at an initial slope of 4 vertical and 3 horizon...

A: In this question we have to determine the initial velocity, range and total time for the projectile....

Q: 1) If acceleration due to gravity js 13 m/8; What will be the patential ehergy of body af mass 2kg k...

A: Given data :                      Mass  =  m                     Acceleration due to gravity  =  g  ...

Q: 8. Solve the following differential equations: - 4y = 0 У (0) %3D 2 (at x = 0) = 4 a. dx2 d?y b. 52 ...

A:

Q: List the fundamental hypotheses of the Newtonian theory of universal gravitation and the experimenta...

A: NEWTONIAN THEORY OF UNIVERSAL GRAVITATION Newton's law of universal gravitation is stated as that ev...

Q: A Carnot engine is running at 30% efficiency and at a rate of 12 cycles/s. It absorbs 1000 J of ener...

A:

Q: The length and breadth of a rectangular sheet are 16.2 cm and 10.1 cm, respectively. The area of the...

A:

Q: At a particular instant a proton is at the origin, moving with velocity m/s. At this instant: (a) W...

A:

Q: The work is done in one second, or one .hour, or one year is called the power True O False O

A: As per our company guidelines we are supposed to answer ?️only first question. Kindly repost others ...

Q: Object's mass is 15 kg is resting on a table. An external force ( 10 N) act with angle ( 30) on this...

A: Given value--- Force = 10 N. mass = 15 kg. angle = 30 degree . We have to find--- Find the minimu...

Q: 12. In the given circuit the current I, is 1) 0.4 A 2) - 0.4 A 30 1.1 3) 0.8 A 4) - 0.8 A 40 an! 40

A: According to kirchhoff first law  Algebraic sum of current at a junction is zero.  According to kirc...

Q: The force on a particle is directed along an x axis and given by F = F0(x/x0 - 1) where x is in mete...

A:

Q: The resultant of the two forces has a magnitude of 650 lb. Determine the direction of the resultant,...

A:

Q: An observer notice an airplane flying horizontally with a constant speed of 200 kph at an altitude o...

A:

Q: 1. Determine the weight B, and the force in the 3 cords. Note that the system is in equilibrium. Sho...

A: The free-body diagram of joint E is shown below.

Q: A laser shines on a pair of vertical slits. The horizontal distance L¡ between the laser and the rul...

A: Given: L1 = 12.3 mL2 = 0.511 md = 0.380mm = 0.380*10-3 m

Q: The intensity of sound waves is proportional to the square of the frequency. True O False

A: Explanation -                         Intensity of sound wave is defined as the total power carried ...

Q: Given: ? Formula with solutions: ? Answer with correct unit: ? 1. Two charges +3µC and +12µC are fix...

A:

Q: TRUE OR FALSE 9. The field lines are closer together where the field is stronger. 10. The greater th...

A: Electric field lines rules states that  Lines are closer together where the field is stronger. Line...

Q: Question 4 45° Figure 4 Figure 4 shows t wo particles 4 and B of mass 5 kg and 4 kg

A: According to Newton's second law  F = ma  Acceleration a = F /m 

Q: on at a Javelength of 5000 Å is approaching the earth with a velocity of 1.50× 106 ms-'. Calculate t...

A: Here, we calculate the given as follow;

Q: 3.3u lo0oe 20002 To002 20002 3.3v

A:

Q: Directions: In this exercise, you will practice drawing electric field lines. Make sure you represen...

A:

Q: Hydrogen atoms in states of high quantum number have been created in a lab. (a) Find the quantum num...

A: (a) in the question it is given that r=0.01mm=10-5m According to the bohr's model of hydrogen like ...

Q: For items 17 to 20, refer to the diagram below 12 V R 1.0 N 2A 3.02 17. How many junctions are there...

A: (a) Junctions are the point where current flowing through a loop get divides.  (b) Kirchoff's juncti...

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.