3 years ago

Mathematical expression between wave number and frequency

Physics

1 answer:

pav-90 [236]3 years ago

7 0

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The sound wave is 1.0 meters

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What sound frequency could a human detect

finlep [7]

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People can hear sounds at frequencies from about 20 Hz to 20,000 Hz,

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To protect their young in the nest, peregrine falcons will fly into birds of prey (such as ravens) at high speed. In one such ep

I am Lyosha [343]

Answer:

Part a)

$\theta = 48 degree$

Part b)

$v = 13.45 m/s$

Explanation:

Part a)

mass of the Falcon bird is given as

$m = 600 g$

initial speed of the bird is

$v_i = 20 m/s$

final speed of the bird is given as

$v_f = 5 m/s$ (opposite direction)

So here the impulse given by falcon bird is given as

$I = m(v_f - v_i)$

$I = 0.600(20 + 5)$

$I = 15 kg m/s$

now the final momentum of Raven bird in perpendicular direction is given as

$I = mv_y$

$15 = 1.50 v_y$

$v_y = 10 m/s$

now the change in the angle of the raven bird is given as

$tan\theta = \frac{v_y}{v_x}$

$tan\theta = \frac{10}{9}$

$\theta = 48 degree$

Part b)

Final speed of the raven bird is given as

$v^2 = v_x^2 + v_y^2$

$v^2 = 9^2 + 10^2$

$v = 13.45 m/s$

5 0

3 years ago

All of the following are examples of radioactive decay except which of the following _______.

Vlada [557]

C is correct answer...

3 0

3 years ago

A massless rod is attached to the ceiling by a string. Two weights are hung from the rod: a 0.4-lb weight at its left end and a

user100 [1]

The tension in the string supporting the rod and the attached weights is 7.11 N.

<h3>Tension in the string supporting the rod</h3>

The tension in the string supporting the rod and the attached weights is the sum of the weights supported by the strings.

T = (m1 + m2)g

where;

m1 and m2 are the two masses supported

0.4lb + 1.2lb = 1.6lb = 0.725 kg

T = 0.725 x 9.8

T = 7.11 N

Learn more about tension here: brainly.com/question/918617

#SPJ1

7 0

2 years ago

Mathematical expression between wave number and frequency​

Mathematical expression between wave number and frequency