A bicycle tyre contains air with volume 3.5 × 10−3 m3, pressure 320 kPa and temperature 14 ℃. A bicycle pump contains air with volume 1.6 × 10−4 m3, pressure 100 kPa and temperature 18 ℃.
The tyre is pumped up until the air inside has volume
3.6 × 10−3 m3, temperature 24 ℃, and a pressure of at least 350 kPa.

Calculate the number of complete strokes of the pump needed to reach at least 350 kPa.

Employer informs its employees that it will hold a substantial cash prize drawing for each work group at the end of each month in which no employee in the work group sustains a lost-time injury. tyra reports an injury that she sustained while operating a mechanical power press. tyra did not violate any employer safety rules when she sustained her injury. tyra’s injury requires her to miss work for two days. her employer cancels the cash prize drawing for that month for tyra’s work group because of tyra’s lost-time injury. did the employer misuse an incentive program to retaliate against tyra?