Applying Concepts Imagine that you and a friend are trying to tune the lowest strings on two different guitars to the same pitch. Explain how you could use beats to determine if the strings are tuned to the same frequency.

Draw a standing wave, and label the nodes and anti nodes.

Name the conditions required for two waves to interfere constructively.

Between 12:00 PM and 1:00 PM, cars arrive at Citibank’s drive-thru at the rate of 6 cars per hour (0.1 car per minute). The following formula from statistics can be used to determine the probability that a car will arrive within t minutes of 12:00 PM. $F(t)=1-e^{-0.1 t}$ Determine how many minutes are needed for the probability to reach 50%.

The Torres family drove 1,375 miles during their 6 1/4 day vacation. Find the average number of miles they traveled each day.

Read the poem aloud, and scan it line by line, marking the stressed syllables and the unstressed syllables. How many strong beats do you hear in each line? Where do you hear variations in the meter?

Alaska was purchased from Russian in 1867 for seven million two hundred thousand dollars. Use digits to write that amount.

Why is South Korea considered an economic tiger?

Stress Test Results For a group of $12$ men subjected to a stress test situation, the average heart rate was $109$ beats per minute. The standard deviation was $4 .$ Find the $99 \%$ confidence interval of the population mean.

Draw a picture of a standing wave, and label a node and an antinode.

Describe what may happen when ripples on a pond encounter a large rock in the water.

Draw a standing wave, and label the nodes and antinodes.

Does wave interference occur for waves in general, or only for light waves? Give examples to support your answer.

A wave along a guitar string has a frequency of 440 Hz and a wavelength of 1.5 m. What is the speed of the wave?