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
Alex_Xolod [135]
4 years ago
9

A violin string that is 50.0 cm long has a fundamental frequency of 440 Hz. What is the

Physics
2 answers:
DENIUS [597]4 years ago
8 0

Answer:

30800 m/s

Explanation:

correct answer

amid [387]4 years ago
5 0
For a standing wave on a string, the wavelength is equal to twice the length of the string:
\lambda=2 L
In our problem, L=50.0 cm=0.50 m, therefore the wavelength of the wave is
\lambda = 2 \cdot 0.50 m = 1.00 m

And the speed of the wave is given by the product between the frequency and the wavelength of the wave:
v=\lambda f = (1.00 m)(440 Hz)=440 m/s
You might be interested in
If you push on a ball with a force of 200 N, what force does the ball push back?
sp2606 [1]
100N divide 2 by 200 it is 100
3 0
3 years ago
What is the monthly (30 days) energy cost (in
Mila [183]

Explanation:

Power= 40 W

cost=21¢/kWh

t=1 month=30 days = 720h

Energy= power*time

E= 40W* 720h = 28800kWh

Cost= Energy*rate

cost= 28800kWh*21¢/kWh

cost=604800¢

3 0
2 years ago
The armature windings of a dc motor have a resistance of 3.0 Ω. The motor is connected to a 120V line, and when the motor reach
svlad2 [7]

Answer:

0.6 A

Explanation:

As the motor gears towards full speed, the voltage of the circuit tends to become the difference that exists between the line voltage and the that of the back emf. Remembering Ohm's law, we then apply it to get the final, lower current that is based on the reduced voltage Ef. We use the provided resistance in the question, that is 3 ohms.

Ef = (120 V) - (117 V) = 3 V

If = Ef/R = (3 V) / (5.0 Ω) = 0.6 A

6 0
3 years ago
Lesson : LIGHT
Feliz [49]

Answer:

Make Brilliant

Explanation:

Answer the following questions on the basis of given ray diagram.

1. Name the rays A and B.

2. Which ray has more speed ( A or B ) in the glass medium ?

3. Which phenomenon is shown in the given diagram ?

4. Ray B is bending more than the ray A. What is the reason behind it ?

8 0
3 years ago
Read 2 more answers
The point of origin of an epileptic seizure is called the ____.â
djyliett [7]
The point of origin of an epileptic seizure is called the focus. It is the part of the brain that is affected by epilepsy. This is a term used for people with partial epilepsy. The focus can be the frontal lobe, occipital lobe, mesial temporal lobe or the parietal lobe. During seizures, it is the that specific part of the brain that is being effected.  Seizures happen when a surge in the electrical activities happen on certain parts. Symptoms are contractions of the muscles, blackouts and visual disturbances. Seizures can be cured and, for partial epilepsy, they are treated with AEDs or antiepileptic drugs.
3 0
4 years ago
Other questions:
  • When you turn on a television, the electrical circuit _____.<br> closes<br> opens<br> does not move
    11·2 answers
  • If you could see the electric field coming off a proton you would notice that electric field lines are what?
    12·1 answer
  • What is the universe expanding into?
    7·1 answer
  • A car starts from rest and moves around a circular track of radius 37.0 m. Its speed increases at the constant rate of 0.440 m/s
    8·1 answer
  • To float in air, a blimp would be filled with helium (true or false)
    9·2 answers
  • Amadeo the Archer is practicing his archery skills. He shoots both arrows into a field. His first arrow (arrow A) is embedded ha
    11·1 answer
  • Pulsed dye lasers emit light of wavelength 585 nm in 0.45 ms pulses to remove skin blemishes such as birthmarks. The beam is usu
    5·1 answer
  • A student performed an experiment with a metal sphere. The student shot the sphere from a slingshot and measured its maximum hei
    13·1 answer
  • If you throw a ball down ward then acceleration immeditely after leaving your hand is
    14·1 answer
  • Write the correct answers:)​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!