A sphere has a surface area of 0.42 m^2 and a uniform surface charge density of 6.7 μC/m^2 . A -6.1-μC point charge is 0.75 m from the center of the sphere. k=8.99×109N⋅m^2/C^2. What is the magnitude of the force between the sphere and the charge?

What accounts for an increase in the temperature of a gas that is kept at constant volume? a. energy has been removed as heat from the gas. b. energy has been added as heat to the gas. c. energy has been removed as work done by the gas. d. energy has been added as work done by the gas.