The dipole moment of an electric dipole is 6.2X10-30 Cm. What is the maximum force acting on it when placed in an electric field: E=1.5X1014 N/m. 9.3x10-26 N/C 93X10-26 N/C 9.3 N/C 9.3x10-16 N/C
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- A bead of 5grams that is amber is suspended by a string in a uniform horizontal electric feild which has a magnitude of 4300 N/C. The bead is in equibrium when the string makes an angle of 33degrees what is the net charge carried by the amber bead? a. -6.2μC b. -7.4 μC c. 9.6 μC d. 6.2μC e. 7.4 μCA very large plane of charge with o= 4.0x10 c/m² lies in the y-z plane. A single charge Q=3.0x 10 C lies on the +x axds at x- 2.0 m. The electric field in N/C at x=5.0 m has the value a. 104. b. 226. c. 300. d. 526. e. 752.Two parallel plates that are initially uncharged are separated by |1.7 mm. What charge must be transferred from one plate to the other if 19.0 kJ of energy are to be stored in the plates? The area of each plate is 16.0 mm2. O 6.0 mC 80 μC O 40 µC O 56 µC
- For each charge distribution: -6.0 x 10-5 C 4.0 x 10-5 C 2.0 m 9₁ L. - 6.0 x 10-5 C 3.0 m A q2 2.0 m A 3.0 m 2 - 3.0 x 10-5 C 1. 2. a. Determine the net electric field at point A for the following charge distribution. b. The magnitude of the electric field due to each charge, (i.e. calculate ε₁ and ε2), at point A. c. The net electric field at point A. a. For each part in practice question 1, find the net force on a -1.2 × 10-5 C charge placed at point A. b. How would your answer change if the sign of the charge from 2a at point A was changed? 3. Explain why the concept of a field was used to describe the force of gravity between two masses. 4. Give two reasons why the concept of a field is used again to describe the force between two charged objects.How many excess electrons must be uniformly distributed throughout the volume of an insulating sphere with radius 8cm in order to produce an electric field of 1350N/C on the surface of the sphere? (Take 1/4T€0 2 9 × 10°N. m2/C2 and le = 1.6 × 10–1ºC) O a. 6.0 x 10° O b. 1.5 x 107 O. 8.0 x 106 O d. 7.6 x 107 O e. 3.6 x 10° O f. 1.2 x 1010 O g. 7.2 x 10 O h. 4.8 x 108A small, 2 g plastic ball carrying a charge 5c is suspended by a 20 cm long string in a uniform electric field If the ball is in equilibrium when the 0=15° , the magnitude of E= E 15.0° Select one: O a. 1 N/c b. 2952000 N/C O c. 1X 10^(-3) N/c O d. 1000 N/c O e. 0.1 N/c
- What should be the direction and magnitude of the vertical electric field that will balance the weight of a plastic sphere with the charge Q= +1.5 nC and mass m= 1.8 g? 3.2 x 10^5 N/C positive y-direction 1.2 x 10^6 N/C in +y-direction 1.2 x 10^6 N/C in negative y-direction 3.2 x 10^5 N/C in negative y-directionTwo electrons are passing 25.0 mm apart. What is the electric repulsive force that they exert on each other? (The value of k is 9.0 x 109 N-m2/C2.) O 3.7 x 10-25 N O 3.7 x 10-27 N 1.4 N O 1.4 x 1010 NThe geometrical parameters of a water molecule are showed in the figure. 96 pm 104.5° H H. Vz Z, Hint: Read the dipole note, pay attention at the direction of the axis here. The vector dipole moment p is O None of these 26.2 x 10-30 C.m @1.49 x 10-30 C.m f6.2 x 10-30 C.m -21.49 x 10-30 C.m
- What is the electric field at a distance of 75 cm from a 30 nC charge? O 760 N/C O 1000 N/C 2800 N/C 480 N/C 850 N/CA rod (length L= 4 m) is uniformly charged and has a total charge of 20 nC. What is the magnitude of the electric field at a point which lies along the axis of the rod and is d= 8 m from the center of the rod? A. 1.732 N/C B. 3 N/C C. 6 N/C D. 1.5 N/C E. 0.75 N/CA 0.4 g object is placed in a 449 N/C uniform electric field. Upon being released from rest, it moves 62 m in 1.8 s. Determine the object's acceleration & charge magnitude. Assume the acceleration is due to the E-field (i.e., ignore all other forces). a = Q =