At one point above Earth's surface a uniform electric field points straight up with a magnitude of 53 N/C. A small charged 10.0 mg bead is held stationary 1.0 m above the ground. What is the charge on the bead if it has an initial upward acceleration of 29.4 m/s? when it is released from rest?
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- Two positive charges are separated by a distance of 1.0 m. The magnitudes of charge 1 and charge 2 are q1 = 5.00 nC and q2 = 16.00 nC, respectively. Determine the point along the line connecting the charges, where the total electric field is zero.The figure shows a configuration of three point charges in a circular arc segment of radius 4.00 cm. The values of the charges are q1=3.00nC, q2= -2.00 nC and q3= 3.00 nC. Determine: a) The electric field at place P. b) If an electron is placed at point P. What is the force felt by this electron? c) What is the initial acceleration of the electron?A point charge Q of -9.86 C and a large flat plate with surface charge density 2.15 C/m2 together create an electric field 5.03 m from the plate. Point P is a distance b = 9.25 m from at point P. Charge Q and point P are each a distance a = charge Q. Find the magnitude of the force exerted by the electric field on a particle with charge 4.54 nC placed at point P in the figure. Answer in units of N. plate (side view)
- In the figure an electron (e) is to be released from rest on the central axis of a uniformly charged disk of radius R. The surface charge density on the disk is +4.12 µC/m?. What is the magnitude of the electron's initial acceleration - m/s² if it is released at a distance R/148 from the center of the disk? 10. e (a) 3.07x1015 (b) 2.08x1015 (c) 4.52x1015 (d) 5.16x1015 (e) None of the aboveAn infinitely long line of charge has a linear charge density of 5.50×10−12 C/m. A proton is at a distance of 12.5 cm from the line and is moving directly toward the line with a speed of 1500 m/s. How close does the proton get to the line of charge?Near the surface of Earth, an electric field points radially downward and has a magnitude of approximately 100 N/C. 1)What charge (magnitude and sign) would have to be placed on a penny that has a mass of 3.11 g to cause it to rise into the air with an upward acceleration of 0.590 m/s2? (Express your answer to three significant figures.)
- A +2 µC charge is at the origin. A +5 µC charge is on the x-axis at +1.0 m. At what point between the charges is the electric field zero? +10 cm +18 cm +39 cm +45 cmAn electron is placed in a uniform electric field of 32nN/C directed north created by two horizontal parallel plates that are 131fm apart. The electron accelerates from rest, starting at the negative plate. What is the net force and acceleration acting on the electron? How long did it take the electron to get from one side of the plate to the other?Charge q1 = 3.00 nC is at x1 = 0 and charge q2 = 4.50 nC is at x2 = 2.50 m. At what point between the two charges is the electric field equal to zero? (Enter the x coordinate in m.)
- Falling raindrops frequently develop electric charges. Does this create noticeable forces between the droplets? Suppose two 1.8 mg drops each have a charge of +25 pC; these are typical values. The centers of the droplets are at the same height and 0.40 cm apart. What is the approximate electric force between them? What horizontal acceleration does this force produce on the droplets?Problem 13: An electron has an initial velocity of 5.15 × 106 m/s in a uniform 1.9 × 105 N/C electric field. The field accelerates the electron in the direction opposite to its initial velocity. Part A: How far does the electron travel before coming to rest in m? Part B: How long does it take the electron to come to rest in s? Part C: What is the magnitude of the electron's velocity (in m/s) when it returns to its starting point in the opposite direction of its initial velocity?17.6. A charged cork ball of mass 1.10 g is suspended on a light string in the presence of a uniform electric field as shown in the figure below. When E = (2.80 î + 5.20 ĵ) ✕ 105 N/C, the ball is in equilibrium at θ = 37.0°. (a) Find the charge on the ball. C(b) Find the tension in the string. N