When two sound sources of the same amplitude and similar frequencies f₁ and f₂ are played at a time, beats are produced with a frequency given by:

Since the guitar player wants to hear 9 beats in 2 seconds, then:

Then, the pitches that can be used are those whose difference with respect to the frequency of 343Hz is 4.5Hz:

Therefore, the pitches he could bend the string to, are 347.5Hz and 338.5Hz.
1 kg of water = 1 L = 1 dm³
762 g of water = 762 cm³
The bowling ball will require more force to roll because it is more massive.
The bigger molecule has more interactions and hence the higher b.p. CH3CH2OCH2CH3 is a bigger molecule than CH4 and CH3CH3, so has more dispersion forces. It also has dipole-dipole forces due to the polarised C-O bonds. CH3OH and CH3CH2OH have hydrogen bonds due to the very electronegative O atom bonded to the H atom
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Answer:
14400 kg
Explanation:
According to Newton's second law of motion, F = ma
F = 3600 N
a = 4m/s2
3600 = m/4
3600*4 = m
m = 14400 kg
Therefore the mass of the car is 14400 kg
Hope u understand
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