Q11. Find out what the frequency of the musical note A4 is and report your finding here. What is the frequency of the musical note A3?

Q12. The speed of sound in air is about 343 m/s. Convert this into miles per hour and into kilometers per hour.

Q13. Calculate the wavelength of the musical note A4 using your answer from Q11 and a speed of sound in air of 343 m/s.

Q14. The length of a guitar's strings is 650 mm. What is therefore the wavelength of a wave on any of the strings if the string is free to move?

Q15. Using your answers from Q11 and Q14, calculate the wave speed on the A4 string of a guitar. What is the wave speed on the A3 string of a guitar?

Q16. You hear your brother playing the guitar in his room at the end of the hall way, 8 m away from you. How long does the sound take to travel from his guitar to your ear?

Q17. Does the amplitude of a wave change its frequency?

The amplitude and the frequency of a wave are equal. The amplitude decreases with an increase in the frequency of a wave. The amplitude increases with an increase in the frequency of a wave.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.