Question

Tolong jawab-in no 15-17 ya mksh



(poin bernilai 10)

Answer 1

Jawaban no. 15: B

W1. l1 = W2. l2

a. 10. 48 = 36. 30

480 = 1.080 (tidak seimbang)

b. 10. 36 = 36. 10

360 = 360 (seimbang)

c. 10. 48 = 50. 10

480 = 500 (tidak seimbang)

d. 28. 48 = 36. 10

480 = 360 (tidak seimbang)

Jawaban no. 16: A

sS = v. t/2 = 1.500. 2/2 = 1.500 m

sR = v. t/2 = 1.500. 3/2 = 2.250 m

Selisih sR - sS = 2.250 - 1.500 = 750 m

Jawaban no. 17: C

Lambda = l/n = 2,5/2,5 = 1 m

f = v / Lambda = 50/1 = 50 m/s