kaylaturn kaylaturn

22-04-2016
Physics

contestada

how long would it take for a sound impulse to travel through a copper Rod 20km

Respuesta :

deangullberry2176 deangullberry2176

24-01-2021

Answer:

0.57 seconds

Explanation:

Answer Link

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Please need help from a math whiz

chứng minh mệnh đề sau bằng phương pháp phản chứng: " Nếu phương trình bậc hai ax2+bx+c=0 vô nghiệm thì a và c cùng dấu"