A sound wave travels at 330m/s and has a wavelength of 2 m. calculate its frequency and period.

frequency= 165Hz

period=

Step-by-step explanation:

1. To calculate the frequency using the formula:

f = v/λ

where,

f=frequency (what the question asked)

v=speed of wave (given in the question=330m/s)

λ=wavelength (given in the question=2m)

SO,

= 165Hz

2. To calculate the period use the formula:

since

therefore,

where,

f= frequency (what we solved above=165Hz)

T= period (what the question asked)

SO,

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads