At a temperature of 320k, the gas in a cylinder has a volume of 40.0 liters. if the volume of the gas is decreased to 20.0 liters, what must the temperature be for the gas pressure to remain constant?
a. 160 k
b. 273 k
c. 560 k
d. 140 k

Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.