Ametallic sphere of radius 2 cm is positively charged with 5 μc of charge, which spreads on the surface of the sphere uniformly. the metallic sphere stands on an insulated stand and is surrounded by a larger metallic spherical shell, of inner radius 5 cm and outer radius 6 cm. now, a negative charge of 5 μc is placed on the spherical shell, which spreads out uniformly on the inner surface of the shell. answer below questions. let v ( r → [infinity] ) = 0 .

An input force of 7 n is applied to a machine with a mechanical advantage of 1.75. what is the maximum the machine could lift? 12.25 n7n7.25 n26.2 n

Acylinder with a movable piston contains 11.7 moles of a monatomic ideal gas at a pressure of 1.32×10^5 pa. the gas is initially at a temperature of 300 k. an electric heater adds 43200 j of energy into the gas while the piston moves in such a way that the pressure remains constant. cp=20.79 j k^−1 mol^−1 for a monatomic ideal gas, and that the number of gas molecules is equal to avogadro's number (6.022×10^23) times the number of moles of the gas. (a) what is the temperature of the gas after the energy is added? (b) what is the change in volume of the gas? (c) how much work is done by the gas during this process?

Sodium chloride, nacl, is formed when a sodium atom transfers its electron to a chlorine atom. the difference in charge between the two atoms creates a(n) attraction that bonds them together.