abbyphillips1649 abbyphillips1649

04-03-2018
Physics

contestada

With what speed must you approach a source of sound to observe a 25% change in frequency?

Respuesta :

Аноним Аноним

04-03-2018

sound source is at rest, you are moving with velocity v, f = frequency, c = speed of sound:

f = f0(1 + v/c)

115 = 100(1 + v/343)
115 = 100 + 100v/343
15 = 100v/343
v = 15*343/100
v = 51,45 m/s

Answer Link

Otras preguntas

the expression below is the factorization of what trinomial (5x+6)(3x-2)

Si vives en argentina, lavas los platos en un(a ____.

3.45 kilometers = _______ micrometers? 3,450,000,000 345,000 0.00000000345 0.0000000345

Why is it thought that advances such as agriculture, literacy, and urbanization have not been accompanied by additional increases in brain size? a. ?the earli

A pendulum that moves through its equilibrium position once every 1.000 s is sometimes called a “seconds pendulum.” what is the period of any seconds pendulum?

What is leading coefficient of the function f(x) = 3x5 + 6x4 − x − 3? a) 3 b) 4 c) 5 d) 6

Enter the missing value into the box to complete the ratio comparing 6 yards to 9 feet. to 1

Triangle RST was transformed using the rule (x, y) → (–x, –y). The vertices of the triangles are shown. R (1, 1) S (3, 1) T (1, 6) R' (–1, –1) S' (–3, –1) T

HELP ME PLEASE!!!!!!!!!!!!!!!!!! find all real numbers x such that 3x-4<5 or -8x-19<21

The equation of the circle whose center is (0, 0) and radius is length 9 is