A student observes a chemical reaction. Aluminum (Al) + Oxygen (O) yields Aluminum Oxide (Al2O3)

She writes an equation that correctly displays the law of conservation of mass.

Select the balanced equation below that she wrote about this chemical reaction.

Group of answer choices

4Al + 3O2 --> 2Al2O3

4Al + 2O2 --> 3Al2O3

2Al + 3O3 --> 2Al2O3

Al + O2 --> Al2O3

Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?

How is zig zagging a form of acceleration?

Point charges q1=+2.00μc and q2=−2.00μc are placed at adjacent corners of a square for which the length of each side is 1.50 cm . point a is at the center of the square, and point b is at the empty corner closest to q2. take the electric potential to be zero at a distance far from both charges. part a what is the electric potential at point a due to q1 and q2? express your answer with the appropriate units.