Near the surface of the Earth there is an electric field ofabout 150 V/m which points downward. Two identical ballswith mass m = 0.670 kg are dropped from a height of 2.00 m,but one of the balls is positively charged with q1 = 650 µC,and the second is negatively charged with q, = -650 µC.Use conservation of energy to determine the difference inthe speed of the two balls when they hit the ground. (Neglectair resistance.)

Since there are no non-conservative forces present in the system, we can apply the law of…

Answered: Near the surface of the Earth there is…

Similar questions

A point charge q, = 5.28 x 106C is held fixed at the origin of a coordinate system. A second charge q2 = -3.96 x 106 C is initially at the coordinates (0.149, 0) m and is then moved to the coordinates (0.211, 0) m. What change in potential energy results from moving q2?
A metal sphere of radius 13 cm has a net charge of 4.0 x 10-8 c. (a) What is the electric field at the sphere's surface? (b) If V = 0 at infinity, what is the electric potential at the sphere's surface? (c) At what distance from the sphere's surface has the electric potential decreased by 560 V? (a) Number i Units (b) Number i Units (c) Number i Units >
Oppositely charged parallel plates are separated by 3.71 mm. A potential difference of 600 V exists between the plates. (a) What is the magnitude of the electric field between the plates? N/C (b) What is the magnitude of the force on an electron between the plates? (c) How much work must be done on the electron to move it to the negative plate if it is initially positioned 2.00 mm from the positive plate?
Consider the four particles shown, with q1 = –40.0 µC, q2 = –20.0 µC, q3 = 15.0 µC, and q4 = –25 µC. The square has sides of length a = 25.0 cm. a) What is the change in the electric potential energy of the system of the four charges in the configuration shown in the figure if they were originally infinitely far away? b) Charges q3 and q4 are now moved to points A and B, respectively. What is the change in potential energy of the system after these charges are moved? c) What are the magnitude and direction of the electric field at the location of charge q4 due to the other three charges? d) What is the initial acceleration of the charge q4 due to the electric force exterted by the other three charges on q4 if m4 = 40.0 g? e) With what speed is charge q4 (with m4 = 40.0 g) moving when it is infinitely far away from the other charges? I need help with specifically D and E. Thanks!
A uniform electric field of magnitude 200 V/m is directed in the positive x-direction. A 17 ÂµC charge moves from the origin to the point (x, y) = (20 cm, 50 cm). (a) What was the change in the potential energy of this charge?
A point charge q1 = 4.69 x 10-6 C is held fixed at the origin of a coordinate system. A second charge q2 = -3.16 x 10-6 C is initially at the %3D coordinates (0.149, 0) m and is then moved to the coordinates (0.215, 0) m. What change in potential energy results from moving q2?
Two large, parallel, conducting plates are 11 cm apart and have charges of equal magnitude and opposite sign on their facing surfaces. An electrostatic force of 4.5 x 10-15 N acts on an electron placed anywhere between the two plates. (Neglect fringing.) (a) Find the electric field at the position of the electron. (b) What is the potential difference in volts between the plates? (a) Number i (b) Number i Units Units
Two large, parallel, conducting plates are 9.5 cm apart and have charges of equal magnitude and opposite sign on their facing surfaces. An electrostatic force of 3.8 × 10-15 N acts on an electron placed anywhere between the two plates. (Neglect fringing.) (a) Find the electric field at the position of the electron. (b) What is the potential difference in volts between the plates? (a) Number i (b) Number i Units Units
Oppositely charged parallel plates are separated by 5.09 mm. A potential difference of 600 V exists between the plates. (a) What is the magnitude of the electric field between the plates? (b) What is the magnitude of the force on an electron between the plates? (c) How much work must be done on the electron to move it to the negative plate if it is initially positioned 2.18 mm from the positive plate?
Two small metal cubes with masses 2.0 g and 4.0 g are tied together by a 5.3-cm-long massless string and are at rest on a frictionless surface. Each is charged to +1.7 μC. (a). The string is cut. What is the speed of 2-g-cube when the cubes are far apart? (b). The string is cut. What is the speed of the 4-g-cube when the cubes are far apart?
In Figure (a), we move an electron from an infinite distance to a point at distance R = 2.50 cm from a tiny charged ball. The move requires work W = 2.81 × 10-13 J by us. (a) What is the charge Q on the ball? In Figure (b), the ball has been sliced up and the slices spread out so that an equal amount of charge is at the hour positions on a circular clock face of radius R = 2.50 cm. Now the electron is brought from an infinite distance to the center of the circle. (b) With that addition of the electron to the system of 12 charged particles, what is the change in the electric potential energy of the system? (a) Number i (b) Number i |R-| (a) Units Units < Det er (b) < A