Lines in the Sand122

The four tires of an automobile are inflated to a gauge pressure of 88500 Pa. Each tire has an area of 0.0276 m2 in contact with the ground. Determine the weight of the automobile. Answer in units of N.

A 2.6 cm thick bar of soap is floating on a water surface so that 2.14 cm of the bar is underwater. Bath oil (of specific gravity 0.8)is poured into the water and floats on top of the water. What is the depth of the oil layer when the top of the soap is j...

Water is flowing at 3 m/s in a circular pipe. If the diameter of the pipe decreases to four-ninth its former value, what is the velocity of the water downstream? Answer in units of m/s.