PLEASE ANSWER FAST
4) A 71.0-kg bungee jumper jumps off a bridge and undergoes simple harmonic motion. If the period
of oscillation is 11.2 s, what is the spring constant (force constant) of the bungee cord?
A) 35.7 N/m
B) 22.3 N/m
C) 26.8 N/m

How many molecules are present in 3 mols of silicon dioxide (sio2)?

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

Which composition of water moves to begin a deepwater current?