Aprojectile is fired from a horizontal springloaded gun aimed directly (along the line of sight) at a distant bull’s eye. because of the pull of gravity during flight, the projectile misses and hits a point at distance y beneath the bull’s eye. to hit the bull’s eye, the gun should be aimed along a line of sight above the bull’s eye, a vertical ) of y, exactly. b) slightly higher than y. c) slightly lower than y.

Arod of some material 0.20 m long elongates 0.20 mm on heating from 21 to 120°c. determine the value of the linear coefficient of thermal expansion [in (degrees c)^-1] for this material.

The ozone hole appears in antarctica during

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.