Two point sources are vibrating in phase producing two-dimensional water wave interference. the first antinodal line on either side of the central maximum will occur at locations where the path difference of the arriving waves is: question 9 options: a) 1/4 î» b) 1/2 î» c) 3/4 î» d) î» e) 2î»

What are the phases shown in a and d called?

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

Standing side by side ,you and a friend step off a bridge at different times and fall for 1.6s to the water below. your friend goes first, and you follow after he has dropped a distance of 2.0m. when your friend hits the water, is the seperation between the two of you 2.0m or more than 2.0m? verify your answer with a calculation.