Doors a and b have the same mass, height, and thickness. door b is twice as wide as door a. a person pushes straight against the outer edge of door b with force f. a second person pushes against the outer edge of door a with force 2f. which door will have the larger angular acceleration? use i = 1/3 ml^2 for the moment of inertia of the door where l represents the width of the door. show all your work.

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.

Amerry-go-round of radius r, shown in the figure, is rotating at constant angular speed. the friction in its bearings is so small that it can be ignored. a sandbag of mass m is dropped onto the merry-go-round, at a position designated by r. the sandbag does not slip or roll upon contact with the merry-go-round. how would you rank the following different combinations of m and r on the basis of the angular speed of the merry-go-round after the sandbag "sticks" to the merry-go-round from largest to smallest. a) m = 10kg, r = 0.25r b) m = 20kg, r = 0.25r c) m = 10kg, r = 0.50r d) m = 10kg, r = 1.0r e) m = 15kg, r = 0.75r f) m = 40kg, r = 0.25r