Which of the following is best determined by applying the principles of relativity and uncertainty, rather than Newtonian physics?
A. The position of an electron
B. The length of an object at rest
C. The position of a bird flying overhead
D. The speed of a truck

What is the measurement of how fast an object moves relative to a reference point?

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.

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?