Two organ pipes, both open at one end but closed at the other, are each 1.14 m long. one is now lengthened by 2 cm. find the frequency of the beat they produce when playing together in their fundamental frequencies.
a) 0.9 hz
b) 3.4 hz
c) 2.4 hz
d) 1.3 hz

Ais not a mixture. colloid compound suspension solution

On mars a rock falls an unknown vertical distance from a resting position and lands in a crater. if it takes the rock 2.5 seconds to fall, how high is the cliff the rock fell from? mars' surface gravity is 3.8 m/s2. a. 9.5 m b. 11.9 m c. 15.2 m d. 23.8 m

Asailboat is traveling to the right when a gust of wind causes the boat to accelerate leftward at 2.5m/s2 for 4s. after the wind stops, the sailboat is traveling to the left with a velocity of 3.0m/s.assuming the acceleration from the wind is constant, what was the initial velocity of the sailboat before the gust of wind? answer using a coordinate system where rightward is positive.