Two identical charged metal balls with in masses m1 = m2 = 0.2 kg each are at a certain distance from each other. Find the charge of the balls if their electrostatic energy at this distance is one million times greater than their mutual gravitational energy.
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- Two identical balloons are inflated and charged in the same manner. They are tied by threads and hung from the same pivot point on the ceiling. The balloons hang down, with the threads making an angle of 13.9° with each other and the balloons being separated by a distance of 71.9 cm (center-to-center). Each balloon has a charge of -3.59x10-7 C. Draw a free-body diagram for the balloons and consider them to act as point objects. a. Calculate the force of electrical repulsion between the balloons. Force of Repulsion x-Component of Tension b. What is the horizontal component of force in the thread that supports either one of the balloons? y-Component of Tension d. What is the mass of either one of the balloons? x10^ Balloon Mass c. What is the vertical component of force in the thread that supports either one of the balloons? x10^ x10^ N x10^ kg N N I IAnswer the followingTwo small spheres have the same mass and volume. One sphere has a charge of 4.00 micro Coulombs, and the other sphere has a charge of -1.00 micro Coulombs. If these two spheres are brought into brief contact with each other and then separated to a distance of 2.00 x 10^-1 metres, what is the electric force between them at this distance?
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- Two negative charges, each with a charge of -7.7 nC, are at fixed locations as shown below. A proton is launched from the midpoint of the line joining the charges in a direction perpendicular to the line joining the charges. Find the minimum initial velocity of the proton that will allow it to escape to infinity. Ignore gravitational or any other influences on the proton. (k=1/480 = 8.99 × 109 Nm²/C2, e = 1.60 × 10-19 C, mproton = 1.67× 10-27 kg). [Hint: Conservation of energy might be helpful and you can assume that the proton is at rest at infinity] 5.0 mm 5.0 mm V 8.9 × 106 m/s 1.8 × 107 m/s None of these 4.6 × 106 m/s 2.3 × 106 m/sAn old fashioned computer monitor accelerates electrons and directs them to the screen in order to create an image. How much equal charge should be placed on the Earth and the Moon so that the electrical repulsion balances the gravitational force of 1.98×10^20N ? Treat the Earth and Moon as point charges a distance 3.84×10^8m apart.A stationary block has a charge of +6.0 x 10^-4 C. A 0.80-kg cart with a charge of +4.0 x 10^ -4 C is initially at rest and separated by 4.0 m from the block. Calculate the cart’s speed after it is released and moves along a frictionless surface to a distance of 10.0 m from the block.