bantuin yang no 1,2,3,9​

bantuin yang no 1,2,3,9​

1. n = 2,5

t = 2 s

f = n/s = 2,5/2 = 1,25 Hz

T = t/n = 2/2,5 = 0,8 s

2. t = 20 s

n = 5

λ = 40 m

s = n x λ

= 5 x 40

= 200 m

v = s/t

= 200/20

= 10 m/s

3. s = 250 cm

t = 2,5 s

v = s/t

= 250/2,5

= 100 cm/s

9. basa

dari cirinya menunjukkan larutan basa