Find E⃗ E→E_vec, the electric field inside the cube. Express the electric field in terms of v0v0v_0, B0B0B_0, and unit vectors ( i^i^i_unit, j^j^j_unit, and/or k^k^k_unit). View Available Hint(s)

At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.