Physics, 16.09.2021 14:00, lLavenderl
Physical Fitness and Lifestyle Practice Active 1 2 Explain how technology has affected people's activity levels. Mark this and return Save and Exit bext Submitâ
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Physics, 22.06.2019 15:30, bloodry
Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples
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Physics, 22.06.2019 21:00, thanitoast84
Ais a machine that makes work easier when a single force is applied. a simple machine b compound machine c endangered machine d complex machine
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Physics, 23.06.2019 16:00, popa60
Acommon procedure for measuring the velocity of an airstream involves the insertion of an electrically heated wire (called a hot-wire anemometer) into the airflow, with the axis of the wire oriented perpendicular to the flow direction. the electrical energy dissipated in the wire is assumed to be transferred to the air by forced convection. hence, for a prescribed electrical power, the temperature of the wire depends on the convection coefficient, which, in turn, depends on the velocity of the air. consider a wire of length l = 20 mm and diameter d = 0.5 mm, for which a calibration of the form v = 6.25 Äâ 10ââ5 h2 has been determined. the velocity v and the convection coefficient h have units of m/s and w/m2 ââšâŚ k, respectively. in an application involving air at a temperature of t⪠= 25â°c, the surface temperature of the anemometer is maintained at ts = 75â°c with a voltage drop of 5 v and an electric current of 0.1 a. what is the velocity of the air?
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Physical Fitness and Lifestyle Practice Active 1 2 Explain how technology has affected people's acti...
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