If you increase the frequency of a sound wave four times, t<span>he speed will increase four times. The correct option among all the options that are given in the question is the first option or option "A". This also shows the frequency and speed of the waves are directly proportional to each other. I hope it helps you.</span>
ummmm it might be 300... i used a calculator
sorry if it is wrong
Answer:
blocks of ice are usually covered with cloth or sawdust while being stored