A laser beam in a darkened room strikes the surface of water at an angle of 30. The velocity in water 2.26*10^8m/s. What is the angle of reflection

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?

For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these