In lab, you attach one end of an ideal spring (of negligible mass) to a wall and the other end of the spring to a 0.200kg pascar that sits at rest on a frictionless, horizontal track. you then pull the pascar horizontally and let go, causing it start it oscillating. the elapsed time from when the pascar first moves through the equilibrium point to the second time it moves through the equilibrium point is 2.60s. find the spring constant, k, of the spring.

Steam enters an adiabatic diffuser at 150 kpa and 1208c with a velocity of 550 m/s. determine the minimum velocity that the steam can have at the outlet when the outlet pressure is 300 kpa.

True or false graphs must include scales that increase by the same amount

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?