A Venturi tube may be used as a fluid flow meter. The difference in pressure is P1 – P2 = 8 kPa. and the fluid is gasoline (density= 700 kg/ m3). The speed at the wide end (v1) is 5 m/s. The speed of the water at the narrow end (v2) is:

Apulley with a mechanical advantage of 5 will require you to pull times the amount of rope. a. 1/5 b. 5 c. 10 d. 15

Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.

Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?