Suppose you send out two different frequencies that reflect off a wall on the opposite side of the room. One frequency is 100 Hz and the other is 1,000 Hz. Which (if either) will echo back to the microphone the fastest

How would a small bar magnet be oriented when placed at position x?

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?

Bonds within one water molecule are examples of