Awater wave with a wavelength of 35.6 cm approaches a wall with a large opening in it. the hole begins to close. what size does the hole in the wall need to be for the wave to noticeably diffract through the hole? justify your answer.

Why is alternating current more effective at long–distance travel than direct current? a. the power lines are made out of conductors. b. transformers increase or decrease voltage as needed. c. the ac generator is more efficient. d. ac has lower voltage than dc.

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

A- a of 8.00 cm a of 34.0 nc. a , -, a of 25.0 nc is on of a of 15.0 cm .be toto aof ? a) b) c) j d) e)