Two loudspeakers emit sound waves along the x-axis. the sound has maximum intensity when the speakers are 19 cm apart. the sound intensity decreases as the distance between the speakers is increased, reaching zero at a separation of 29 cm.

what is the wavelength of the sound?
express your answer using two significant figures.
\lambda =

{\rm cm}

part b
if the distance between the speakers continues to increase, at what separation will the sound intensity again be a maximum?
express your answer using two significant figures.

{\rm cm}

Athermometer is removed from a room where the temperature is 70° f and is taken outside, where the air temperature is 10° f. after one-half minute the thermometer reads 60° f. what is the reading of the thermometer at t = 1 min? (round your answer to two decimal places.) ° f how long will it take for the thermometer to reach 30° f? (round your answer to two decimal places.)

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Alarge box of mass m is pulled across a horizontal frictionless surface by a horizontal rope with tension t. a small box of mass m sits on top of the large box. the coefficients of static and