Aray of light is incident on a plane mirror at an angle of 40 degrees with the mirror surface. what will be the angle of reflection? a) 40 degrees b) 50 degrees c) 90 degrees d) 150 degrees

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?

The speed of light can be used to measure the

Two rigid transformations are used to map δhjk to δlmn. the first is a translation of vertex h to vertex l. what is the second transformation? a reflection across the line containing hk a rotation about point h a reflection across the line containing hj a rotation about point k