Answer:
A
Explanation:
houses use alternating current source
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We can point to the invention of the wheel . The wheel invention made possible the production of hundreds of complex machinery.
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Explanation:
S =ut + 1/2at^2
S = 0×6.5 + (1/2 × 9.54) × 6.5^2
S =0 + 4.77 ×42.25
S=201.5m
8500 Hz and Longitudinal
Speed = frequency x wavelength
Speed of sound at 20 degrees Celsius is approximately 340 m/s
