A camera lens focuses on an object 78.0 cm from the lens. The
image forms 3.50 cm behind the
lens. If the object is 12.4 cm tall,
how tall is the image?
(Mind your minus signs.)
(Unit = cm)

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.

Frequency of electromagnetic waves that a radio station is assigned. what do you call this type of wave?

You have 80 g of 60oc water and 80 g or 10oc water. what is the final temperature when the two are mixed? explain.