An infinite line of charge with linear density λ1 = -7.8μC/m is positioned along the axis of a thick conducting cylindrical shell of inner radius a = 2.9 cm and outer radius b = 5.3 cm and infinite length. The conducting cylindrical shell is uniformly charged with a linear charge density λ 2 = 5.4 μC/m. 1)What is Ex(P), the electric field at point P, located at (x, y) = (-10.1 cm, 0 cm) ?

The starship enterprise is caught in a time warp and spock is forced to use the primitive techniques of the 20th century to determine the specific heat capacity of an unknown mineral. the 125-g sample was heated to 96.3°c and placed into a calorimeter containing 85.9 g of water at 20.0°c. the heat capacity of the calorimeter was 14.2 j/k. the final temperature in the calorimeter was 24.5°c. what is the specific heat capacity (in j/g°c) of the mineral? enter to 4 decimal places.