Agirl sits on a tire swing and is pushed in a circular motion by her father. her tangential speed is 2.8 m/s and the girl travels in a circle with a diameter of 4.0 m. what is the girls centripetal acceleration?

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx

What is a possible result of higher air temperature caused by global warming

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?