Which of the following can enter and exit an open system?
A. Energy but not matter
B. Matte...
Physics, 20.10.2021 14:00 bestgamer7373
Which of the following can enter and exit an open system?
A. Energy but not matter
B. Matter and energy
C. Neither energy nor matter
D. Matter but not energy
Answers: 3
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After a big snowfall, you take your favorite rocket-powered sled out to a wide field. the field is 195 m across, and you know that your sled accelerates at a rate of 3.65 m/s2 when the rocket is on. how much time will it take the sled to cross the field starting from rest, assuming the rocket is on the whole time?
Answers: 1
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Awoman stands a distance d from a loud motor that emits sound uniformly in all directions. the sound intensity at her position is an uncomfortable 2.0×10-3 w/m2. at a distance 2.6 times as far from the motor, what are (a) the sound intensity and (b) the sound intensity level relative to the threshold of hearing?
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