Which is a characteristic property of acids? a. they turn blue litmus paper red. b. they turn red litmus paper blue. c. they taste bitter. d. they do not react with metals.

What is the final velocity of the initial velocity of 25 and -50?

Which notation is used to represent an alpha particle? a. b. c. d.

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.