The probability of breaking a tree branch increases while moving towards the tip of the branch: Give reason. ( please help me in solving this)

When an object moves in uniform circular motion, the direction of its acceleration is a) in the same direction as its velocity vector. b) in the opposite direction of its velocity vector c) is directed toward the center of its circular path. d) is directed away from the center of its circular path. e) depends on the speed of the object.

Select the correct answer from each drop-down menu. compared to its surroundings, the concentration of solutes is low inside a cell. so, the cell is with respect to its surroundings. a particular solute in this cell uses energy for its transport from the cell to its surroundings. this type of transport is called

The speed of light in a material is 0.50 c. what is the critical angle of a light ray at the interface between the material and a vacuum?