The print size for the body of a newspaper is around 8-9 point. At this size, a reader would need to discern parts of the text that are as close as 100 microns, or 0.0001 meters. What is the farthest distance that the average person could hold the paper from their face and still comfortably read the text. a. 100 cm b. 66 cm c. 30 cm d. 10 cm

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

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.

A10-kg isto a of 10 m at aa0.9 kg/m.30 kg of ,at aas10-m .. ( 9.8 m/s2 g.)