Two sensors are spaced 700 feet apart along the approach to a small airport. when an aircraft is nearing the airport, the angle of elevation from the first sensor to the aircraft is 20 degrees, and from the second sensor to the aircraft it is 12 degrees. determine the height of the aircraft in feet at this time?

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600

What is the technical name for super glue type adhesives?