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Which of the following requires the expenditure of more work? (a) Lifting a 100 newton [N] weight a height of 3 meters [m]. (b) Exerting a force of 60 pounds-force [lb Subscript f] on a sofa to slide it 30 feet [ft] across a room.
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The density of a substance is 4.0 g/cm3. if a sample of the substance has a volume of 25 cm3 then what is the mass
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Your target variable is δf, the magnitude of the difference in frequency between the waves emitted from the sonar device and the waves received by the device after reflecting off the whale. write an expression for δf in terms of the relevant frequencies using the subscript notation introduced above.
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Physics, 22.06.2019 14:00
What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration
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Which of the following requires the expenditure of more work? (a) Lifting a 100 newton [N] weight a...
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