After testing a model of a fuel-efficient vehicle, scientists build a full-sized vehicle with improved fuel efficiency. which stage of technological design does this best describe?
a. implement the solution
b. evaluate the solution
c. design a solution
d. identify a problem

Arrange the images in order to show how lake-effect snow occurs.

Which bonds are found inside a water molecule

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?