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
We know that the Moon revolves around Earth during a period of 27.3 days. The average distance from the center of Earth to the c
PtichkaEL [24]

Answer:

Explanation:

This is a circular motion questions

Where the oscillation is 27.3days

Given radius (r)=3.84×10^8m

Circular motion formulas

V=wr

a=v^2/r

w=θ/t

Now, the moon makes one complete oscillation for 27.3days

Then, one complete oscillation is 2πrad

Therefore, θ=2πrad

Then 27.3 days to secs

1day=24hrs

1hrs=3600sec

Therefore, 1day=24×3600secs

Now, 27.3days= 27.3×24×3600=2358720secs

t=2358720secs

Now,

w=θ/t

w=2π/2358720 rad/secs

Now,

V=wr

V=2π/2358720 ×3.84×10^8

V=1022.9m/s

Then,

a=v^2/r

a=1022.9^2/×3.84×10^8

a=0.0027m/s^2

3 0
3 years ago
PLEASE HELP ME WITH THIS ONE QUESTION
Kitty [74]

Answer:

Q = 282,000 J

Explanation:

Given that,

The mass of liquid water, m = 125 g

Temperature, T = 100°C

The latent heat of vaporization, Hv = 2258 J/g.

We need to find the amount of heat needed to vaporize 125 g of liquid water. We can find it as follows :

Q=mH_v\\\\Q=125\ g\times 2285\ J/g\\\\Q=282250\ J

or

Q = 282,000 J

So, the required heat is 282,000 J .

6 0
2 years ago
An explosion inside a nuclear plant resulted in an exposure of 250 Rem/hr. (2 miles away). How far will you have to move away to
makkiz [27]

Answer:

f something happens to go wrong at a nuclear reactor, anyone living in a 10-mile radius of the plant may have to evacuate. This map also shows a 50-mile evacuation zone, the safe distance that the U.S. government recommended to Americans who were near

because

7 0
3 years ago
I was processing over this one i can tell u! C or D got me stumped, please help me
r-ruslan [8.4K]
D. be transported from place to place
because it does allow c to happen but not directly as it would have to go through condensation first.
When the water is evaporated in the air it can be moved from place to place by the wind.
3 0
3 years ago
Which statement describes how this diagram could be changed so that it
Dominik [7]

Answer:

b. add a magnetic metal core

Explanation:

a p e x test

8 0
3 years ago
Read 2 more answers
Other questions:
  • Two canoeists in identical canoes exert the same effort paddling and hence maintain the same speed relative to the water. One pa
    15·1 answer
  • Which object will be the easiest for a magnet to pull? a 1-gram piece of paper, a 2-gram eraser, a 3-gram steel paper clip, a 4-
    13·1 answer
  • Radium-226 emits alpha (α), beta (β) and gamma (γ) radiation.
    12·1 answer
  • PLEASE HELP ME I JUST CAN'T FIGURE THIS ONE OUT
    15·2 answers
  • a soccer player kicks a ball with a speed of 30 m/s at an angle of 10. how long does the ball stay in the air?
    12·2 answers
  • (PLEASE HELP) Which of the following is the name for two or more types of atoms that are chemically bonded together?
    9·2 answers
  • Find the angle for the third-order maximum for 591 nm wavelength light falling on a diffraction grating having 1460 lines per ce
    6·1 answer
  • If you found yourself on the see-through side of this one-way mirror what is the best way you could prevent someone on the other
    11·1 answer
  • Does the Sun actually turn dark during a total solar eclipse? Why or why not?
    6·2 answers
  • if the electron affinity for an element is a negative number, does it mean that the anion of the element is more stable than the
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!