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Hatshy [7]
3 years ago
7

A drawn bow possesses mechanical energy in the form of _______________. After the arrow is released, the energy is transformed i

nto _________________.
Physics
2 answers:
natali 33 [55]3 years ago
6 0

Answer:

potential energy, kinetic energy

Explanation:

ss7ja [257]3 years ago
3 0

Explanation:

A drawn bow posses elastic potential energy. When a bow is drawn, the mechanical energy is converted in the form of elastic potential energy. We know that the energy of system remains conserved. After the arrow is released, the energy is transformed into kinetic energy. Kinetic energy is possessed due to the motion of an object.

Hence, first blank is elastic potential energy and another blank is kinetic energy.

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ivanzaharov [21]

Answer:

Kinetic energy doubles

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a = (21-12)/(0.45) = 20cm/s^2

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A pipe open at both ends has a fundamental frequency of 220 Hz when the temperature is 0°C. (a) What is the length of the pipe?
Allushta [10]

Explanation:

It is given that,

Fundamental frequency, f = 220 Hz

(a) We know that at 0 degrees, the speed of sound in air is 331 m/s.

For open pipe, \lambda=2l

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Also,

v=f\lambda

l=\dfrac{v}{2f}=\dfrac{331}{2\times 220}=0.75\ m

(b) Let f' is the fundamental frequency of the pipe at 30 degrees and v' is its speed.

v'=331\sqrt{1+\dfrac{T}{273}}

v'=331\sqrt{1+\dfrac{30}{273}}

v' = 348.71 m/s

So, f'=\dfrac{v'}{\lambda}

f'=\dfrac{348.71}{2\times 0.75}

f' = 232.4 Hz

Hence, this is the required solution.

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