Bill is an observer on earth. debra pilots a spaceship which passes earth at speed 0.820c in the +x direction. amanda pilots a spaceship which passes earth at speed 0.778c in the -y direction. bill holds a picture frame which lies in the x-y plane that is 0.75 m long (along x-direction) by 0.50 m wide (along y-direction). (a) what is the area of the picture frame as measured by debra? (b) what is the area of the picture frame as measured by amanda?

Click the game tab at the bottom of the simulation and select level 1. (there is no seesaw balance for this part of the activity.) balance the first equation, and click check to see if you got it right. if you can’t balance it in the first try, you can try again. work through the five equations for level 1. click continue to go on to level 2, and later level 3. each level is more difficult than the one before. keep trying until all the equations are balanced. in one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.