What is the speed of a wave that has a frequency of 125 hz and a wavelength of 1.25 meters? express your answer to the nearest whole number. 156.25 meters per second

156 is the answer. so 156.25 is almost the same thing, you just round. It's not hard. Thank you!!!

The speed of the wave is 156.25 meter per second .

Explanation:

Use the formula for the relation between the speed of a wave and frequency.

Where f is frequency and is wavelength .

f = 125 hz

Putting all the values in the formula

Therefore the speed of the wave is 156.25 meter per second .

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.