I need help please with A mass of 286 g is placed on a spring with an unknown spring constant
while on Earth. Measure the original length of the spring and then click on
the place mass button. The mass is slowly lowered until equilibrium is
established. Based on the change in length of the spring, determine the
spring constant of the spring. Enter your answer into the box below and
then hit submit to see if you are correct.

Simple harmonic motion wind energy circulation best answer from the choices

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.