Physics, 26.11.2019 07:31 elijahjacksonrp6z2o7
An unknown source plays a pitch of middle c (262 hz). how fast would the sound wave from this source have to travel to raise
the pitch to c sharp (271 hz)? use 343 m/s as the speed of sound.
a. 2.8 m/s
c. 11.4 m/s
b. 15.6 m/s
d. 8.2 m/s
Answers: 2
Physics, 22.06.2019 15:40, dreamdancekay
How does the electric potential energy between two charged particles change if one particle is reduced by a factor of 3? a. increased by a factor of 3 b. it is decreased by a factor of 9 c. it is reduced by a factor of 3 d. it is increased by a factor of 9
Answers: 1
Physics, 22.06.2019 20:30, jandrew2052
Avehicle accelerates from 0 to 30 m/s in 10 seconds on a straight road
Answers: 2
Physics, 22.06.2019 21:40, iancuteodora30
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.
Answers: 1
An unknown source plays a pitch of middle c (262 hz). how fast would the sound wave from this source...
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