In the sound wave that is traveling from the guitar string to your ears, what is the distance between adjacent condensations? (For the speed of sound in air use the value, at 20 degrees Celsius, from the inside front cover of your textbook.)

52.5cm

Explanation:

First determine the wavelength of sound wave in air . i.e

λ= velocity/frequency

where,

velocity 'v' is 343 m/s

frequency 327 hz

λ= 343/327

λ = 1.049 m => 104.9cm

next is to determine the distance between adjacent condensations  by taking half of the wavelength which we have found above.

= 1/2 x wavelength

= 1/2 x 104.9

= 52.5 cm

therefore, the distance between adjacent condensations is 52.5cm

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

                                              ⇒      

here   k is the proportionality constant whose value is 1.

                                                            [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.