A wave has a frequency of 23.0 Hz and a wavelength of 14.9 m. What is the velocity of the wave? 1.54 m/s
8.1 m/s
37.9 m/s
343 m/s

343 m/s

Explanation:

Velocity Formula (Wave): v = fλ

v - velocity

f - frequency

λ - wavelength

We are given f = 23.0 and λ = 14.9. Simply plug it into the formula:

v = 23.0(14.9)

v = 342.7

v ≈ 343

343 m/s

Explanation:

There is a formula to calculate the velocity of a wave given the frequency and wavelength.

Velocity = Frequency × Wavelength

v = f λ

v = 23 × 14.9

v = 342.7 ≈ 343

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.