How can you distinguish between unlabeled pint cartons of milk and cream without breaking the seal

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

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.

Which word expression describes how much to calculate pressure