Physics, 06.11.2020 17:10 bchamp2005p5upqx
Which of the following is the amount of work done by a hydraulic lift that
uses 1470 N to raise a 150 kg aluminum block 2.09 m vertically?
O 1470
O 300 J
0 2940
075)
Answers: 1
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Select the correct answer. what does the process of natural selection involve?
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Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.
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Adolphin emits ultrasound at 100khz and uses the timing of reflections to determine the position of objects in the water. part a what is the wavelength of this ultrasound? assume that temperature of water is 20 degrees c. answer in cm
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Auniform solid cylinder with a radius of 10 cm and a mass of 3.0 kg is rotating about its center with an angular speed of 33.4 rpm. what is its kinetic energy?
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Which of the following is the amount of work done by a hydraulic lift that
uses 1470 N to raise a 1...
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