Physics, 27.12.2019 05:31 AceGravity
Ahorizontal string fixed at both ends is oscillating in a standing wave pattern. consider the vertical motion of a point on the string. which, if any, of these points are moving with simple harmonic motion? a) only the antinodes b) only the nodes c) all of the choices are correct except the nodes, which don't move at all. d) only the fixed ends e) none of the choices is correct
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Ahair dryer is basically a duct in which a few layers of electric resistors are placed. a small fan pulls the air in and forces it through the resistors where it is heated. air enters a 1200 w hair dryer at 100 kpa and 22°c and leaves at 47°c. the cross-sectional area of the hair dryer at the exit is 60 cm2. neglecting the power consumed by the fan and the heat losses through the walls of the hair dryer, determine (a) the volume flow rate of air at the inlet and (b) the velocity of the air at the exit.
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Ahorizontal string fixed at both ends is oscillating in a standing wave pattern. consider the vertic...
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