Tolong jawab secepatnya 😔

<p>Jawaban yang tepat adalah&nbsp;</p><p>80. 𝞴 = 24 m</p><p>81. T = 2/3 sekon</p><p>82. V = 36 m/s</p><p>&nbsp;</p><p>Pembahasan :</p><p>n = 3/2 = 1,5 gelombang&nbsp;</p><p>t = 1 s</p><p>80. ½𝞴 = 12</p><p>&nbsp; &nbsp; &nbsp; &nbsp;𝞴 = 12 : ½</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 12 x 2</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 24 m</p><p>&nbsp; &nbsp; &nbsp; Panjang gelombangnya adalah c. 24 m</p><p>&nbsp;</p><p>81. T = t/n</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 1/(3/2)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 1 x 2/3</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 2/3 s atau 0,67 sekon</p><p>&nbsp; &nbsp; &nbsp; &nbsp;(tidak ada dalam pilihan jawaban)</p><p>&nbsp;</p><p>82. V = 𝞴/T</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 24/(2/3)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 24 x 3/2</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 36 m/s</p><p>&nbsp; &nbsp; &nbsp; (Tidak ada dalam pilihan jawaban )</p>