Jenna is standing in the middle of two identical loudspeakers that are 3 m apart and face each other. The speakers are driven in phase by the same oscillator at a frequency of 873 Hz. The speed of sound in the room is 345 m/s. Find the shortest distance in centimeters Jenna can walk toward either speaker in order to hear a minimum of sound. Please give your answers with 1 decimal place.

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?

Which of the following types of electromagnetic radiation has the longest wavelength? a. infrared light b. visible light c. ultraviolet light d. microwaves

Acamcorder has a power rating of 20 watts. if the output voltage from its battery is 9 volts, what current does it use?