As shown in the diagram, a section of pipe has one end open (labeled B) and one end closed (labeled A). For a standing wave to form in the pipe, where must an antinode occur?

at a point midway between A and B

at a point 2/3 the distance from A to B

at A, the closed end of the pipe

at B, the open end of the pipe

What is magnetic flux? explain faraday's law of induction.

The metric unit of electrical power is the watt volt ampere ohm

A23 kg log of wood begins from rest, 300 m up a sluice (a water track used to transport logs, think of it as an inclined plane with negligible friction) inclined at 20° to the horizontal. after it reaches the flat waterway at the bottom it collides elastically with a 100 kg block of wood initially at rest near the base of the incline. (a) how long does it take the 23 kg log to travel down the incline? (b) what is the speed of the 23 kg log at the bottom of the incline? (c) what are the velocities of both blocks of wood after the collision? (d) what is the total kinetic energy before the collision? (e) what is the kinetic energy of the 23 kg log after the collision? (f) what is the kinetic energy of the 100 kg block of wood after the collision? (g) what is the total kinetic energy after the collision? (h) compare the total initial and total final kinetic energies. is this consistent with what you would expect for elastic collisions? explain!