Physics, 27.11.2019 05:31 montgomerykarloxc24x
Ahelicopter, starting from rest, accelerates straight up from the roof of a hospital. the lifting force does work in raising the helicopter. (a) what type(s) of energy is (are) changing? ls each type increasing or decreasing ? why? (b) how is (are) the type(s) of energy that is (are) changing related to the work done by the lifting force? (c) if you want to determine the average power generated by the lifting force, what other variable besides the work must be known? an 810-kg helicopter rises from rest to a speed of 7.0 m/s in a time of 3.5 s. during this time it climbs to a height of 8.2 m. what is the average power generated by the lifting force?
Answers: 1
Physics, 21.06.2019 22:30, tvrgrvJfbhh3881
Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.
Answers: 3
Physics, 22.06.2019 16:40, byers024
Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward
Answers: 1
Ahelicopter, starting from rest, accelerates straight up from the roof of a hospital. the lifting fo...
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