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Supp Q. No. 11 2069 Supp Set B Q. No. 11 A pianofon
wire having a diameter of 0....
Physics, 24.03.2021 21:10 genesisprieto11
Fied
[4]
Supp Q. No. 11 2069 Supp Set B Q. No. 11 A pianofon
wire having a diameter of 0.90 mm is replaced by another
wire of the same material but with diameter 0.93 mm. If the
tension of the wire is as before, what is percentage change
in the frequency of fundamental note?
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Ans: 3.2
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56. 2072 Supp Q. No. 11 On a day when the speed of sound is
345 m/s, the fundamental frequency of a closed organ pipe
220 Hz. The second overtone of this pipe has the same
wave length as the third harmonic of an open pipe. How long
is the open pipe?
Ans: 0.47 m
57 2072 Set C Q. No. 11 A wire with mass 40 g is stretched so
that its ends are tied down at points 80 cm apart. The wire
vibrates in its fundamental mode with frequency 60 Hz
Calculate the speed of propagation of transverse waves in
the wire and the tension in the wire.
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Answers: 2
Physics, 21.06.2019 20:30, milhai0627a
Asmall metal bar, whose initial temperature was 10° c, is dropped into a large container of boiling water. how long will it take the bar to reach 70° c if it is known that its temperature increases 2° during the first second? (the boiling temperature for water is 100° c. round your answer to one decimal place.) sec how long will it take the bar to reach 98° c? (round your answer to one decimal place.)
Answers: 2
Physics, 21.06.2019 23:30, idjfjcjs584
Edward tolman explained the results of his study by theorizing that the rats were learning about the maze during every trial but they a. were agitated because other groups were getting reinforcement b. could not remember how to demonstrate it without reinforcement c. were not motivated to demonstrate it without reinforcement d. seemed to be too lazy to actually work without reinforcement
Answers: 3
Physics, 22.06.2019 18:30, ayoismeisalex
Both speed and velocity measure how fast something is moving. however, since speed is not a it does not require a(n question 6 options: a) quantity , unit b) magnitude, unit c) scalar, direction d) vector, direction
Answers: 2
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