1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ipn [44]
3 years ago
9

A string tied between two post is oscillating at 3Hz. A student determines the standing waves have a length of 4 meters. What is

the velocity of the wave?
Physics
1 answer:
torisob [31]3 years ago
8 0

Answer:

12 m/s

Explanation:

Standing waves are waves that are formed between two fixed points in space, so they cannot propagate, but they are just oscillations about a fixed points. Examples of standing waves are the waves in a string.

The relationship between wavelength, frequency and speed of a wave is given by the wave equation:

v=f \lambda

where

v is the speed of the wave

f is its frequency

\lambda is its wavelength

For the standing wave in this problem we have:

f = 3 Hz is the frequency of the wave

\lambda=4 m is the wavelength

Solving for v, we find the velocity of the wave:

v=(3)(4)=12 m/s

You might be interested in
Question 1
Strike441 [17]
The answers are a b c a a b a
7 0
3 years ago
Read 2 more answers
Please help me!!!!!!!!!!!!!!!​
qaws [65]

Answer:

3

Explanation:

i did it

3 0
3 years ago
You're caught running a red light on Hwy 316. Attempting to impress the skeptical patrol officer with your physics knowledge, yo
kykrilka [37]

Answer

given,

wavelength of the red light,λ = 687 nm

wavelength of the yellow light = 582 nm

Frequency of red light

=\dfrac{v}{\lambda}

=\dfrac{3\times 10^8}{687\times 10^{-9}}

= 4.36 x 10¹⁴ Hz

frequency of the yellow light

=\dfrac{3\times 10^8}{582\times 10^{-9}}

= 5.15 x 10¹⁴ Hz

speed of the car

f = f_o(\dfrac{c+v_r}{c})

v_r is the required speed.

5.15\times 10^{14}=4.36\times 10^{14}(\dfrac{c+v_r}{c})

v_r = 0.19 c

v_r = 0.19 x 3 x 10⁸ =5.7 x 10⁷ m/s

1 m/s = 2.23694 mile/hr

v_r = 1.27 x 10⁸ mile/hr

if the light is actually yellow

f₀ = 5.15 x 10¹⁴ Hz

f =5.15\times 10^{14}(\dfrac{c+0.19c}{c})

f = 6.13 x 10¹⁴ Hz

wavelength corresponding to this frequency is wavelength = 493.2 nm

hence, the color corresponding to this wavelength is Green.

3 0
3 years ago
Hi there hope your having a great day!! my questions both are SCIENCE laws of motion related fyi
Ann [662]
1. 6.0 m

force/mass× acceleration is the equation

since the accelaration is unknown you would divide 180 by the mass of 30kg which is 6

2.A


4 0
3 years ago
You launch a baseball through the air at speed 37 m/sec, at angle 45 degrees above horizontal. Neglect air resistance. What shap
Marizza181 [45]

Answer:

Parabolic motion

Explanation:

It is given that,

Speed with which a baseball is launched through the ar, v = 37 m/s

Angle of projection, \theta=45^{\circ}

We know that when an object is projected with some initial speed having some angle of projection, the path followed by the object is called projectile motion. The object will act as a projectile here. As a result the shape of the trajectory will be parabolic.

The equation of parabolic path is given by :

y=tan\theta\ x-\dfrac{gx^2}{2u^2\ cos^2\theta}

It is similar to,

y=ax+bx^2 which is the equation of parabola

Hence, this is the required solution.                                                                                                    

6 0
3 years ago
Other questions:
  • A baseball player slides into third base with an initial speed of 4.0 m/s . if the coefficient of kinetic friction between the p
    12·1 answer
  • A ball is released from a tower at a height of 100 meters toward the roof of another tower that is 25 meters high. The horizonta
    13·1 answer
  • Acceleration is defined as a change in velocity over time. If a runner increases velocity
    12·1 answer
  • The tendency of an object to resist changes in it motion​
    10·1 answer
  • Explain why the pressure exerted by a gas does not depend on the type of the gas.
    5·2 answers
  • Would the springs inside a bathroom scale be more compressed or less compressed if you weighed yourself in an elevator that acce
    12·1 answer
  • If a neutral object such as paper comes close to a positively charged plastic rod, what type of charge accumulates on the side o
    14·2 answers
  • Bob can row 14 mph in still water. The total time to travel downstream and return upstream to the starting point is 4 hours. If
    13·1 answer
  • I need help wit this physics question.
    15·1 answer
  • The state highway patrol radar guns use a frequency of 9.50 GHz. If you're approaching a speed trap driving 37.9 m/s, what frequ
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!