A seconds pendulum is one that passes through its equilibrium position once every 1.000 s. Part A
What is the period of a seconds pendulum?
Express your answer to four significant figures and include the appropriate units.
Part B
A seconds pendulum in Chicago has a length of 0.9933 m. What is the acceleration due to gravity in Chicago?
Express your answer to four significant figures and include the appropriate units.

Ithink it is a. but i'm not 100 percent sure.

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.

The statement that best describes the object on the right is a bar magnet with its north pole on the left.