You have a lightweight spring whose unstretched length is 4.0 cm. First, you attach one end of the spring to the ceiling and hang a 1.8 gg mass from it. This stretches the spring to a length of 4.8 cm . You then attach two small plastic beads to the opposite ends of the spring, lay the spring on a frictionless table, and give each plastic bead the same charge. This stretches the spring to a length of 4.8 cm . What is the magnitude of the charge (in nC) on each bead?

THE FIGURE BELOW SHOWS A CROSS SECTION OF TWO LONG, THIN COAXIAL CYLINDERS OF RADIUS a AND b. THE CYLINDERS CONTAIN EQUAL CHARGES A PER UNIT LENGTH AND OPPOSITE SIGNS. A POSITRON ROTATES IN A CIRCULAR PATH BETWEEN THE CYLINDERS AND CONCENTRIC TO THEM. FIND ITS KINETIC ENERGY FOR À= 30 nC/m

Two electric charges q1=2.0μCq1=2.0μC and q2=4.0μCq2=4.0μC are located 0.50m apart. How much work is needed to move the two charges apart and double the distance between them? Select one: a. 0.14 J b. 0.0 J c. −7.2×10−2J−7.2×10−2J d. 7.2×10−2J7.2×10−2J e. -0.14 J

Answer option D only. I will rate accordingly.

You and your colleagues have been tasked with launching a weather balloon into the Earth's stratosphere via rocket ship. In order to reduce fuel usage to meet with newly imposed fuel-consumption regulations, you are hoping to use the electric interaction between charges to your advantage. You have decided on the design below. You are able to place two Q = 1.98 C charges in the rocket ship and into the launching platform so that they are separated by a distance of yo = 2.93 m. You are allowed enough fuel to boost the rocket to an initial speed of vo = 309 m/s without accounting for the extra boost from the charges. The rocket on its own has a mass of 2.095x104 kg. The more equipment you can attach to your weather balloon (which is inside the rocket), the better. What limit do you put on the mass of the weather balloon and attached equipment? You may want to know the formula for gravitational potential energy for an object of mass m and height h: Egray = mgh, where g=9.81 m/s?. Edge of…

Three point charges q1 = +2.7µC, q2 = -3.4µC and q3 = -1.6µC initially are infinitely far apart. They are then brought together and placed at the corners of an equilateral triangle. Each side has a length of 40 cm. Determine the total electric potential energy of these group of charge Express your answer in J.

A small object with a charge of q = 12.0 µC travels from the origin to the point (x, y) = (20.0 cm, 50.0 cm) in the presence of a uniform electric field E = 290î V/m. Determine the following. %3D %3D (a) the change in the electric potential energy (in J) of the object-field system (b) the electric potential difference (in V) through which the object moves Need Help? Read It

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