Acord of mass 0.75 kg is stretched between two supports 7.2 m apart. part a if the tension in the cord is 150 n , how long will it take a pulse to travel from one support to the other?

The speed of a standing wave in a string is given by

where T is the tension of the string and is the linear mass density, with m being the mass of the string and L its length. Substituting into the first formula, and using the values given by the exercise, we can find the speed of the wave


So now we can calculate how long does a pulse take to travel from one support to the other: the distance is 7.2 m, the speed is 37.9 m/s, and this is a uniform linear motion, so the time is given by

Each student aligns the edge of the object with the left edge of the ruler as shown above. all four students read the ruler with a measurement of 4.6 cm. which statement describes the data they collect? i believe the answer is: the data have poor precision and poor accuracy because of a systematic error.

Aand b antarctica is a north pole.  field lines enter earth near the north pole.the magnetic pole near antarctica is a north pole.compasses point toward a magnetic pole that is a north pole.field lines circle earth from east to west.a compass can lead a hiker to the geographic north pole.