Two cars are driving down separate streets in the same city. The velocity of car A is given by the vector a = (2x+3y)m/s. The velocity of car B is given by the vector b=(5x+2y)m/s. What is the angle between the paths of the two cars?

Organelles are 1. responsible for producing power for the cell 2. tiny structures in the cell that carry out the cell's activities 3. responsible for digestion in the cell 4. found outside of the membrane

The space between two 15-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 × 10-3 lb·s/ft2). the inner cylinder has a radius of 1 in. and the gap width between cylinders is 0.1 in. determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. the outer cylinder is fixed. assume the velocity distribution in the gap to be linear.

Which wave is the result of amplification and produces a louder sound