Aluminum oxide consists of two ions chemically bonded together. What are the charges of each ion? O A. Al3+ and 02- B. A12+ and 03- O C. A13- and 02+ O D. A12- and 03+

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

Determine the maximum r-value of the polar equation r =3+3 cos 0

Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j