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Lapatulllka [165]
3 years ago
8

(I will Give anybody who will answer the Brainiest) PLEASE help me with this! : A child is throwing stones at the center of a po

ol and would like to find the travelling speed of waves in water. Write an experimental design where the child can calculate the speed of wave. Hint: Pool floor is built with foot long tiles.
Physics
1 answer:
Allushta [10]3 years ago
6 0

A wave is a disturbance that propagates, or moves from the place it was created. The simplest waves repeat themselves for several cycles and are associated with simple harmonic motion. Let us start by considering the simplified water wave in Figure 2. The wave is an up and down disturbance of the water surface. It causes a sea gull to move up and down in simple harmonic motion as the wave crests and troughs (peaks and valleys) pass under the bird. The time for one complete up and down motion is the wave’s period T. The wave’s frequency is

f

=

1

T

f

=

1

T

, as usual. The wave itself moves to the right in Figure 2. This movement of the wave is actually the disturbance moving to the right, not the water itself (or the bird would move to the right). We define wave velocity vw to be the speed at which the disturbance moves. Wave velocity is sometimes also called the propagation velocity or propagation speed, because the disturbance propagates from one location to another.

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Consider an object on a rotating disk a distance r from its center, held in place on the disk by static friction. Which of the f
SVEN [57.7K]

Answer:

A) False

B) False

C) True

D) True

E) True

Explanation:

A) The formula for tangential speed v in term of angular speed ω and radius of rotation r is

v = \omega r

So if the angular speed is constant and 0, the tangential speed is also 0. A) is false

B) False because of the centripetal acceleration:

a_c = \omega^2 r

C) True because of the formula for tangential acceleration in term of angular acceleration α is

a_t = \alpha r

D) True because same as D), if it has angular acceleration, it would have a tangential acceleration. Also from B) the centripetal acceleration will come with time as soon as angular speed is generated by angular acceleration.

E) True and same explanation as from B)

8 0
3 years ago
Reactance Frequency Dependence: Sketch a graph of the frequency dependence of a resistor, capacitor, and inductor. RLC Circuit R
jolli1 [7]

Answer:

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

Explanation:

We know that impedance of a RLC circuit is given by Z=R+J(X_L-X_C)

So Z=\sqrt{R^2+(X_L-X_C)^2} here R is resistance X_L is inductive reactance and X_C is capacitive reactance

To minimize the impedance X_L-X_C should be zero we know that X_L=\omega L\ and \ X_C=\frac{1}{\omega C}

So \omega L-\frac{1}{\omega C}=0

\omega ^2=\frac{1}{LC}

\omega =\sqrt{\frac{1}{LC}}

We know that \omega =2\pi f

So \omega =2\pi f=\frac{1}{\sqrt{LC}}

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

Where f is resonance frequency  

8 0
3 years ago
Write the y-equation for a wave traveling in the negative x-direction with wavelength 50 cm, speed 4.0 m/s, and amplitude 5.0 cm
Zanzabum

Answer:

y = A sin(2\pi(\dfrac{x}{50})+ 8 t)

Explanation:

given,

wavelength, λ = 50 cm

speed, v = 4 m/s

Amplitude, A = 5 cm

general equation of the wave along x- axis

y = A sin(2\pi(\dfrac{x}{\lambda})\pm \nu t)

sign is positive when wave is traveling in negative direction

now,

\nu = \dfrac{v}{\lambda}

\nu = \dfrac{4}{0.5}

\nu = 8\ s^{-1}

inserting all the values

y = A sin(2\pi(\dfrac{x}{50})+ 8 t)

Hence, the y-equation of wave is equal to y = A sin(2\pi(\dfrac{x}{50})+ 8 t)

7 0
3 years ago
If a total of 1250 offspring were obtained from your cross, determine the number of offspring that you would expect to obtain th
irakobra [83]

Answer:

106 single crossover events

Explanation:

Total number of offspring = 1250

<u>Determine the number of offspring that would be expected </u>

( Rf between the genes vg and Pr ) * ( Total number of progeny )

  =   0.125 * 1250 ≈ 156 ( value for single and double crossovers )

next :

( value of the Rf of double crossovers ) * ( Total number of progeny )

= (0.322 * 0.125) = 0.04025  * 1250 = 50

Hence the number of offspring expected to obtain/represent a single crossover event between pr and vg

=  156 - 50 =  106

3 0
3 years ago
When a metal element bonds with a non mental element they are known as ____ bond
frozen [14]

Answer:

ionic

Explanation:

ionic bond is when a metal and nonmetal are bonded together

metallic bond is when a two metal are bonded

covalent is nonmetal and nonmetal bond or idk

4 0
4 years ago
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