Four students want to know the most accurate way to measure the speed of a wave. the method their professor uses has a percent error of 3.68%. each student tests a different method and writes the result in the chart below. if the accepted value of a wave is 121 m/s, who has the most accurate method of measuring the speed of a wave?
a.)the professor
b.)erin
c.)jean-claude
d.)suresh

Cardiac muscle causes movement in the bone.

Distance covered = speed x timethe distance traveled going against the stream = distance traveled with the stream.therefore it is the speed and the time that are the variables.as he travels the same distance both ways, speed x time is the same for each way.going upstream his speed is 4 kph; going downstream his speed is 6 kph.therefore we have two simultaneous equations: time upstream x 4 = time downstream x 6time upstream + time downstream = 60 minutestherefore we have the equation: time upstream = 6/10 hour, time downstream therefore = 4/10 hour.distance traveled at 4km/hr in 6/10 hour = 24/10 = 2.4km.check: distance traveled at 6km/hr in 4/10 hour = 24/10 = 2.4km.

Answerit decreases;