Abee wants to fly to a flower located due north of the hive on a windy day. the wind blows from east to west at speed 6.68 m/s. the airspeed of the bee (i. e., its speed relative to the air) is 8.33 m/s. in which direction should the bee head in order to fly directly to the flower, due north relative to the ground? answer in units of â—¦ east of north.

Wo audio speakers are placed on a vertical rail. speaker a is placed at head-level while speaker b is place at some variable height, \delta yδy, above speaker a. both speakers receive simultaneous input from a sine-wave generator so the speakers each produce a pure sinusoidal sound wave with a wavelength of 0.531 meters. calculate the lowest height that speaker b can be placed above speaker a to produce a minimum of sound heard by person standing \delta x = 7.86δx=7.86 meters directly in front of speaker a.

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat

Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.