Pitot probes are often used to measure airspeed. They are often used in wind tunnels during calibration. Some wind tunnels are able to simulate altitude conditions. Suppose a wind tunnel is simulating conditions at 15000 feet. If the difference between the static and stagnation pressure readings on a pitot probe is 0.5 psi, what is the speed of the wind tunnel

Simon is writing a story about an astronaut whose spacecraft has been boarded by space pirates. the astronaut has her lucky penny in her hand behind her back as the space pirates break into the control room. she has just locked the controls so that the ship is accelerating in the direction of the control room’s ceiling. simon wants the astronaut to use the penny to hit a button on the control panel to turn off the lights and escape. the button is located a short distance behind and below the astronaut’s hands. how should simon use the theory of relativity to describe what the astronaut must do in order to hit the button?