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
Shkiper50 [21]
3 years ago
10

What is the frequency of a wave whose wavelength is 0.7m and whose velocity is 120m/s?

Physics
1 answer:
ANEK [815]3 years ago
5 0

Answer:

f=171.43Hz

Explanation:

Wave frequency is the number of waves that pass a fixed point in a given amount of time.

The frequency formula is: f=v÷λ, where <em>v</em> is the velocity and <em>λ</em> is the wavelength.

Then replacing with the data of the problem,

f=\frac{120\frac{m}{s} }{0.7m}

f=171.43\frac{1}{s}

f=171.43 Hz (because \frac{1}{s} = Hz, 1 hertz equals 1 wave passing a fixed point in 1 second).

You might be interested in
What is the changing of the position of an object relative to a point of reference
Bond [772]
The displacement ........................
5 0
4 years ago
An LC circuit consists of a 3.4-µF capacitor and a coil with a self-inductance 0.080 H and no appreciable resistance. At t = 0 t
alexira [117]

Answer

given,

capacitance = C = 3.4-µF

inductance = L = 0.08 H

frequency is expressed as

f = \dfrac{1}{2\pi\sqrt{LC}}

time period

T = \dfrac{1}{f}=2\pi\sqrt{LC}

after time T/4 current reach maximum

 t = \dfrac{T}{4}

 t = \dfrac{2\pi\sqrt{LC}}{4}

 t = \dfrac{2\pi\sqrt{0.08 \times 3.4 \times 10^{-6}}}{4}

        t = 8.2 x 10⁻⁴ s

        t = 0.82 ms

b) using law of conservation

  \dfrac{1}{2}CV^2=\dfrac{1}{2}LI^2

  I^2 = \dfrac{CV^2}{L}

  I^2 = \dfrac{C}{L}\dfrac{Q^2}{C^2}

  I =\sqrt{\dfrac{Q^2}{CL}}

  I =\sqrt{\dfrac{(5.4 \times 10^{-6})^2}{0.08 \times 3.4 \times 10^{-6}}}

       I = 0.010 A

       I = 10 mA

4 0
3 years ago
A boy throws a ball and accidentally breaks a window. The momentum of the ball and all the pieces of glass taken together after
Aleks [24]
When a boy throws a ball and accidentally breaks a window, the momentum of the ball and all the pieces of glass taken together after the collision is THE SAME as the momentum of the ball before the collision

hope this helps
6 0
3 years ago
Read 2 more answers
A physics student uses a spring loaded launcher to fire a 58 gram projectile horizontally. The projectile leaves the launcher at
timofeeve [1]

Answer:

no answer

Explanation:

the question does not sk what to find

3 0
3 years ago
Find the sum of the vectors:11 km N ,11km E
vladimir1956 [14]

The resultant vector is 11√2 km due north east.

<h3><u>Explanation:</u></h3>

The vector is a type of quantity which has both magnitude and direction. This quantities when expressed needs to specify both magnitude and direction.

We need to calculate the magnitude and direction separately.

Here firstly for the magnitude,

The magnitudes are both 11 km and they are at right angles to each other.

So, the resultant magnitude = √(11² +11²) km

=11√2 km

Now for the direction, one vector is due north and the other is due east.

So the resultant vector is due north east.

So the final vector is 11√2 km due North-East.

6 0
3 years ago
Other questions:
  • The length of a retanle is twice the width plus 10. if the perimenter of the rectangle must be 200 inches what is the maimumarea
    14·1 answer
  • What are the five natural agents of erosion? What is the driving force behind all of these agents of erosion?
    9·1 answer
  • Can objects in a system have momentum while the momentum of the system is zero? explain your answer.
    12·1 answer
  • What is half-life? a. Half-life is a term that describes the time it takes for half of a particle to disintegrate c. Half-life i
    13·1 answer
  • How does mass effect my room?
    13·1 answer
  • Give the atomic mass and atomic number of this atom.
    15·1 answer
  • Find the net work done by friction on the body of a snake slithering in a complete circle of 1.04 m radius. The coefficient of f
    5·1 answer
  • For a point charge, how does the potential vary with distance from the point charge, r?
    8·1 answer
  • Which Diagram represents summer? ​
    12·1 answer
  • A positive charge is placed in an electric field that points west. What direction
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!