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
katen-ka-za [31]
3 years ago
10

A wave with a frequency of 17 Hz has a wavelength of 4 meters. At what speed (in m/s) will this wave travel?

Physics
1 answer:
Molodets [167]3 years ago
5 0

Answer:68m/s

Explanation:

Frequency=17Hz

Wavelength=4metre

Wave speed=frequency x wavelength

Wave speed =17 x 4

Wave speed =68m/s

You might be interested in
Arigid body must rotate about an axis in order for it to have angular momentum about that axis. True False
kompoz [17]

Answer:

False

Explanation:

Let's consider the definition of the angular momentum,

\vec{L} = I \vec{\omega}

where I = \int\limits_m r^2 dm = \lim_{n \to \infty} \sum\limits_{i=1}^n m_i r_i^2 is the moment of inertia for a rigid body. Now, this moment of inertia could change if we change the axis of rotation, because "r" is defined as the distance between the puntual mass and the nearest point on the axis of rotation, but still it's going to have some value. On the other hand,

\vec{\omega} = \frac{\vec{r} \times \vec{v}}{r^2} so \vec{\omega} \neq 0 unless \vec{r} ║  \vec{v}.

In conclusion, a rigid body could rotate about certain axis, generating an angular momentum, but if you choose another axis, there could be some parts of the rigid body rotating around the new axis, especially if there is a projection of the old axis in the new one.

7 0
3 years ago
An electric fan is running on HIGH. After fan has been running for 1.3 minutes, the LOW button is pushed. The fan slows down to
mafiozo [28]

Answer:

    wo = 18.75 rev / s

Explanation:

This is an exercise in endowment kinematics, it indicates that the final angular velocity is w_f = 109 rad / s, the time to reach this velocity is t = 1.87 s and the deceleration a = 4.7 rad / s²

         w_f = w₀ - a t

         w₀ = w_f + a t

         w₀ = 109 + 4.7 1.87

         w₀ = 117.8 rad / s

let's reduce to revolutions / s

         w₀ = 117.8 rad / s (1 rev / 2pi rad)

         w₀ = 18.75 rev / s

8 0
3 years ago
A ball of mass 6 kg is moving to the right with a velocity of 4 m/s when it strikes a 12 kg green block moving to the left at 5
Marat540 [252]

Answer:

Velocity of both masses after the collisio

Explanation:

Hope it will help

<h2><em><u>Brainlists please</u></em></h2>
3 0
3 years ago
Find the volume of a cube measeuring 5 cm on each side
Leona [35]
125 cm^3 ——————)-)-()-)))-
6 0
3 years ago
Which best explains why a wood-burning fireplace does not represent a closed system? A. because a fire requires oxygen from the
sweet [91]
Answer is A of course lol Fire needs oxygen as an essential fuel to burn.
7 0
3 years ago
Other questions:
  • Einhorn and Finkle are in a convenience store together. For a while they talk about stealing hot dogs and deodorant, for they ar
    9·1 answer
  • When Anna eats an apple, the sugars in that apple are broken down into the substance called glucose. Glucose is then burned in h
    7·2 answers
  • An 80.0 kg man sits on a scale in his car. The car is driving at a speed of 11.0 m/s right as it passes over the top of a semici
    5·1 answer
  • How do we know that pulsars are neutron stars?
    11·1 answer
  • If a 2-kg ball is thrown through the air at 20 m/s what is the momentum of the ball?
    14·1 answer
  • A particle that has mass m and charge q enters a uniform magnetic field that has magnitude B and is directed along the x axis. T
    10·1 answer
  • The largest water tower in Camden holds 2,000,000-gallons at 24 meters in the air.
    15·1 answer
  • Determine the orbits period of the moon when the distance between the earth and the moon is 3.82 x 10 to the power of 8
    9·1 answer
  • 1. In a particular experiment to study the photoelectric effect, the frequency of the incident light and the temperature of the
    9·1 answer
  • Calculate the magnitude of the electric force between two charged balloons if one of the balloons has a charge of 15 * 10 ^ - 8
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!