It is easy to cut curry by a sharp knife, why?

Complete the sentence to describe how light behaves as it relates to its nature (waves or particles). light travels as blank and interacts with matter as blank

Which statement about covalent bonds is true

Adelivery truck leaves a warehouse and travels 2.60 km north. the truck makes a left turn and travels 1.25 km west before making another right turn to travel 1.40 km north to arrive at its destination. what is the magnitude and direction of the truck's displacement from the warehouse?