One step in the production of hydroelectric power involves a. falling water that turns a turbine b. hot water from under the ground c. tides that pour through a barrier dam d. electric current flowing across a dam

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.

Which basic property determines a colored light's placement on the spectrum of visible light? a. speed b. frequency c. amplitude d. velocity