A nearsighted student with a far point of 5.90 m wears contacts that allow him to see distant objects clearly. When the student views a 2.20 m high tree that is 17.4 m away though his contacts, determine the following. (a) the image distance for the tree
m
(b) the image size, that is the height of the tree
m

Need in all of themmm only answer if you know plsssss

A2 kg ball travellng to the right with a speed of 4 m/s collidees with a 5 kg ball traveling to the left with a speed of 3 m/s. take right to be the positive direction. what is the total momentum of the two balls before they collide? what is the total momentum of the two balls after they collide?

Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.