Suppose that two objects attract each other with a gravitational force of 10 Newtons. If the distance between
the objects was 1/2 the original distance AND the mass of
BOTH of the objects decreased by 1/2, what would the new
force of attraction between them be? (include the
magnitude and units in your answer).

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.