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Physics, 21.06.2019 23:30
In which of the following cases is work being done on an object? question 2 options: pulling a trailer up a hill carrying a box down a corridor suspending a heavy weight with a strong chain pushing against a locked door
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Physics, 22.06.2019 01:30
Ajet plane has a sound level of 120 db at a distance of 60 m. what is the q23. sound level at a distance of 6.0 km? (60)2 (6000)? om solution 80db db, hint: 16x assume ultrasound waves travel through the body of an animal at 1540 q24. m/s. if a 30,000 hz signal were reflected off a portion of a heart which was moving toward the source at 3 m/s, what frequency signal would return to the stationary source? solution 30.117hz
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Physics, 22.06.2019 06:00
Using a pedometer, you walk 3000 steps in 20 minutes, so your speed is 150 steps/min. each of your steps is 0.7 m long. what is your speed? 150 steps/min=/s=/h
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Physics, 22.06.2019 11:20
How to tell if a molecule is polar or nonpolar with electronegativity
Answers: 2
Arocket, weighing 43576 n, has an engine that provides an upward force of 11918 n. it reaches a maxi...
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