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3 years ago

The distance from the peak to a peak of a successive wave.

Physics

1 answer:

ad-work [718]3 years ago

3 0

Answer:

Wavelength

Explanation:

Wavelength is the horizontal distance between the peaks of successive troughs or crests of a wave. Wavelength is measured in meters and when you have the wavelength you can also calculate the frequency when velocity of the waves are known since velocity of wave is given as the product of wavelength and frequency. Conclusively, the distance as described from peak to peak of successive wave is termed as wavelength

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If the period of oscillation of a simple pendulum is 4s, find its length. If the velocity of the bob

Natalija [7]

Answer:

Explanation:

Because we assume the pendulum is a "mathematical pendulum" (neglecting the moment of inertia of the bob), we can find:

$T=2\pi\sqrt{\frac{L}{g}} \rightarrow 4=2\pi\sqrt{\frac{L}{9.81}} \rightarrow \frac{4}{\pi^{2}}=\frac{L}{9.81} \rightarrow L \approx 3.97 m$

By using the $y=A\sin(\omega t) \rightarrow v = \frac{dy}{dt}=\omega A \cos\omega t = \omega\sqrt{A^{2}-y^{2}}$

The mean position is the position when y = 0, so:

$\omega = \frac{2\pi}{T}=\frac{2\pi}{4}=0.5\pi$ rad/s

and $v = \omega A \rightarrow A=\frac{40}{0.5\pi}=\frac{80}{\pi}$ in centimeters (cm).

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2 years ago

On a cool morning, Uyen’s breath can form a cloud when she breathes out. Which changes of state are most responsible for Uyen se

SCORPION-xisa [38]

The heat from Uyen's breathe causes heer to see her breathe visibly. The state that is responsible for it though is Vaporization and Condensation.

I hope this helps! (^_^)

6 0

4 years ago

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Narcotics are highly addictive and affect the driver's

adelina 88 [10]

Answer:

that's should be the answer

6 0

3 years ago

Read 2 more answers

A thin-walled vessel of volume V contains N particles which slowly leak out of a small hole of area A. No particles enter the vo

LuckyWell [14K]

Answer:

$\frac{V}{2av}$

Explanation:

From the question we are told that

Volume V

Contains N particles

Leaks from a small hole of area A

Generally the equation for Flow rate is given as

Volume Flow Rate $V_r = A * v$

Mathematically we find the time taken to flow half way which is given by

$\frac{(V/2)}{A*v}$

Therefore the time taken is

$\frac{V}{2av}$

7 0

3 years ago

A pulley of radius 8.0 cm is connected to a motor that rotates at a rate 7000 rad s-1 and then decelerate uniformly at a rate of

zlopas [31]

Answer:

(a) α = - 1000 rad/s²

Negative sign represents deceleration.

(b) θ = 3581 rotations

(d) a = - 80 m/s²

Explanation:

(a)

using First equation of motion for angular motion:

ωf = ωi + αt

where,

ωf = Final Angular Speed = 2000 rad/s

ωi = Initial Angular Speed = 7000 rad/s

α = Angular Acceleration = ?

t = time = 5 s

Therefore,

2000 rad/s = 7000 rad/s + α(5s)

α = (2000 rad/s - 7000 rad/s)/5 s

α = - 1000 rad/s²

Negative sign represents deceleration.

(b)

Using second equation of motion:

θ = ωi t + (1/2)αt²

where,

θ = No. of Rotations = ?

Therefore,

θ = (7000 rad/s)(5 s) + (1/2)(- 1000 rad/s²)(5 s)²

θ = 35000 rad - 12500 rad

θ = (22500 rad)(1 rotation/2π rad)

θ = 3581 rotations

(c)

Length of String = L = (Circumference of Pulley)(θ)

L = [2π(0.08 m)][3581 rotations]

L = 1800 m

(d)

Tangential Acceleration = a = rα

a = (0.08 m)(-1000 rad/s²)

a = - 80 m/s²

4 0

3 years ago