Which statement is true ? a. a resistor alters current , and a switch turns current on & off b. a resistor measures voltage and a switch changes ac to dc or dc to ac c. a resistor alters current and a switch measures voltage d. a resistor changes ac to dc or dc to ac and a switch turns current on & off

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.6 m below the tank bottom which is a = 6.7 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute). report your answer in meters to two decimal places.

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.

Which of the following is not an appropriate unit for acceleration? (kg/12 mihr? m/min/sec cm/30c?