Point charge 3.5 μC is located at x = 0, y = 0.30 m, point charge -3.5 μC is located at x=0 y=-0.30 m. What are (a) the magnitude and (b)direction of the total electric force that these charges exert on a third point charge Q 4.0 μC at x = 0.40 m, y = 0? Part A Express your answer using two significant figures. |F|= ΜΕ ΑΣΦ Submit Request Answer Part B 0 = 19 ΑΣΦ ? Submit Request Answer Provide Feedback ? N clockwise from the + direction Next > < 2 of 11 Three point charges are located on the positive x-axis of a coordinate system. Charge q₁ = 1.0 nC is 2.0 cm from the origin, charge q2 4.0 nC is 4.0 cm from the origin and charge q3 5.0 nC located at the origin. What is the net force ((a)magnitude and (b) direction) on charge g₁ = 1.0 nC exerted by the other two charges? = Part A Express your answer using two significant figures. ΜΕ ΑΣΦ Submit Part B Request Answer VO A ΑΣΦ Submit Request Answer ? ? N counterclockwise from the + direction Item 3 < 3 of 11 Three point charges are arranged along the x-axis. Charge q₁ =+3.00 μCis at the origin, and charge q₂ = -5.00 μC is at x=0.200 m. Charge q3 +8.00 μC. Part A Where is q located if the net force on q₁ is 7.00 N in the - direction? Ο ΑΣΦ 23 = Submit Request Answer Provide Feedback ? m Next > <Homework 1 Item 4 4 of 11 A proton is placed in a uniform electric field of 2600 N/C. Part A Calculate the magnitude of the electric force felt by the proton. ΜΕ ΑΣΦ Submit Request Answer Part B Calculate the proton's acceleration. ΜΕ ΑΣΦ a= Submit Request Answer ? ? N m/s² Part C Calculate the proton's speed after 2.00 μs in the field, assuming it starts from rest. ΜΕ ΑΣΦ V= Submit Request Answer m/s <Homework 1 Item 5 5 of 11 Part A What must the charge (sign and magnitude) of a 1.49-g particle be for it to remain stationary when placed in a downward-directed electric field of magnitude 640 N/C? ΜΕ ΑΣΦ Submit Request Answer ? C Part B What is the magnitude of an electric field in which the electric force on a proton is equal in magnitude to its weight? ΜΕ ΑΣΦ EN Submit Request Answer Provide Feedback N/C Next >> <Homework 1 Item 6 6 of 11 An electron is projected with an initial speed 1.10x106 m/s into the uniform field between the parallel plates in the figure. Assume that the field between the plates is uniform and directed vertically downward, and that the field outside the plates is zero. The electron enters the field at a point midway between the plates. K-2.00 cm K VO 1.00 cm TE E Part A. If the electron just misses the upper plate as it emerges from the field, find the speed of the electron as it emerges from the field? Ο ΑΣΦ V = m/s Submit Request Answer Provide Feedback Next>> <Homework 1 Item 7 7 of 11 > Two positive point charges q are placed on the z-axis, one at za and one at z=-a Part A Find the electric field at x=0. ΜΕ ΑΣΦ E= Submit Request Answer Part B Derive an expression for the electric field at points on the x-axis, where-a<<a Express your answer in terms of the variables q, z, a and appropriate constants. ΜΕ ΑΣΦ E, Submit Request Answer Part C Derive an expression for the electric field at points on the x-axis, where z> a Express your answer in terms of the variables q, z, a and appropriate constants. ΜΕ ΑΣΦ E₁ = Submit Request Ansar ? <Homework 1 Item 8 8 of 11 Point charge q₁ =-5.00 nC is at the origin and point charge q2 +3.00nC is on the z-axis at z=3.00cm. Point P is on the y-axis at y = 4.00cm. Part A Calculate the electric fields E, and E2 at point P due to the charges q, and q₂. Express your results in terms of unit vectors (see example 21.6 in the textbook). Express your answer in terms of the unit vectors i, j. Enter your answers separated by a comma. ΜΕ ΑΣΦ Submit Request Answer ? N/C Part B Use the results of part (a) to obtain the resultant field at P, expressed in unit vector form. Express your answer in terms of the unit vectors 1, 3. Ο ΑΣΦ Submit Request Answer Provide Feedback ? N/C Next > III = <Homework 1 Item 9 ELIASSUMMER201951 9 of 11 > A small 12.3 g plastic ball is tied to a very light 25.0 cm string that is attached to the vertical wall of a room. (See the figure) A uniform horizontal electric field exists in this room. When the ball has been given an excess charge of -1.50 μC, you observe that it remains suspended, with the string making an angle of 17.4 with the wall. Part A Find the magnitude of the electric field in the room. ΜΕ ΑΣΦ E= Submit Request Answer Part B. Find the direction of the electric field in the room. to the left to the right Submit Request Answer ? N/C 17.4° อ <Homework 1 Item 10 10 of 11 > Point charge q -4.00x106 C is on the z-axis at z=-0.300 m. Point charge q is on the z-axis at 2 +0.4 m. Point charge qs +3.00x106 C is at the origin. Part A What is q₂ (magnitude and sign) if the net force on gs is 6.00 N in the+-direction; Express your answer with the appropriate units. Value Submit Request Answer ? Units Part B What is q2 (magnitude and sign) if the net force on qs is 6.00 N in the --direction; Express your answer with the appropriate units. Value Submit Request Answer Provide Feedback Units Next > <Homework 1 Item 11 11 of 11 > A semicircle of radius a is in the first and second quadrants, with the center of curvature at the origin. Positive charge +Q is distributed uniformly around the left half of the semicircle, and negative charge-Q is distributed uniformly around the right half of the semicircle in the following figure. y +0 -Q a Part A What is the magnitude of the net electric field at the origin produced by this distribution of charge? Express your answer in terms of the variables Q, a, constant, and electric constant. Ο ΑΣΦ E Submit Request Answer ? Part B What is the direction of the net electric field at the origin produced by this distribution of charge? + direction. - direction +y direction direction x