A spherical conductor of radius r1 is given charge q. A second, neutral spherical conductor of radius r2 is connected to the first by a long thin straight conducting wire of length much more than r1 or r2. After the connection, how does the electric potential on sphere 1 compare to that on sphere 2

Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.