Diagnostic ultrasound of frequency 4.50 MHz is used to examine tumors in soft tissue. What is the wavelength in air of such a sound wave?

A string that is under $54.0 \text{ N}$ of tension has a linear density $5.20 \ \dfrac{\text{g}}{\text{m}}$. A sinusoidal wave with an amplitude $2.50 \text{ cm}$ and wavelength $1.80 \text{ m}$ travels along the string. What is the maximum velocity of a particle on the string?

For a violin, estimate the length of the portions of the strings that are free to vibrate. The frequency of the note played by the open E5 string vibrating in its fundamental standing wave is 659 Hz. Use your estimate of the length to calculate the wave speed for the transverse waves on the string.

Consider a diagnostic ultrasound of frequency 5.00 MHz that is used to examine an irregularity in soft tissue. (a) What is the wavelength in air of such a sound wave if the speed of sound is 343 m/s? (b) If the speed of sound in tissue is 1800 m/s, what is the wavelength of this wave in tissue?

When the door of the Chapel of the Mausoleum in Hamilton, Scotland, is slammed shut, the last echo heard by someone standing just inside the door reportedly comes 15 s later. If that echo were due to a single reflection off a wall opposite the door, how far from the door is the wall?

How many permutations of the letters a, b, c, d, e, f, g contain neither the string bge nor the string eaf?

Marlie will be starting college next month. She was approved for a 10-year, Federal Unsubsidized student loan in the amount of $18,800 at 4.29%. She knows she has the option of beginning repayment of the loan in 4.5 years. She also knows that during this non-payment time, interest will accrue at 4.29%. Suppose that Marlie had decided to apply for a private loan rather than a federal loan. She has been offered a private loan for 10 years with an APR of 7.8%. a. Determine her monthly payment. b. What is the total amount she will pay back? c. What is the total interest amount?

Explain how bowing a violin string gets it to vibrate.

Give an example of an experiment in which light behaves as waves. Give an example of an experiment in which light behaves as a stream of photons.

Directly derivable string

How do you denote a string in JavaScript?

The method that extracts a string from within another string is _______.
a. extract()
b. parseString()
c. substring()
d. append()

The ______ function copies one string to another.

The _________ function copies one string to another.