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Aleks [24]
2 years ago
11

Help me real quick someone

Physics
1 answer:
Rasek [7]2 years ago
3 0

Explanation:

10 ......

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A sinusoidal wave of angular frequency 1,203 rad/s and amplitude 3.1 mm is sent along a cord with linear density 3.9 g/m and ten
kobusy [5.1K]

Answer:

18.7842493212 W

Explanation:

T = Tension = 1871 N

\mu = Linear density = 3.9 g/m

y = Amplitude = 3.1 mm

\omega = Angular frequency = 1203 rad/s

Average rate of energy transfer is given by

P=\dfrac{1}{2}\sqrt{T\mu}\omega^2y^2\\\Rightarrow P=\dfrac{1}{2}\sqrt{1871\times 3.9\times 10^{-3}}\times 1203^2\times (3.1\times 10^{-3})^2\\\Rightarrow P=18.7842493212\ W

The average rate at which energy is transported by the wave to the opposite end of the cord is 18.7842493212 W

7 0
3 years ago
How far can a person run in 15 minutes if he runs at an average speed of 16 km/hr?
anygoal [31]

Answer:

4km

Explanation:

15 minutes is 1/4 of an hour.

1/4 of 16 is 4.

3 0
3 years ago
Consider a system of a cliff diver and the Earth. The gravitational potential energy of the system decreases by 25,000 J as the
salantis [7]

Answer:

568.18 N

Explanation:

From the question,

The formula for gravitational potential is given as

Ep = mgh........................ Equation 1

Where Ep = Gravitational potential, m = mass of the diver,h = Height.

But,

W = mg.................... Equation 2

Where W = weight of the diver.

Substitute equation 2 into equation 1

Ep = Wh

Make W the subject of the equation

W = Ep/h................... Equation 3

Given: Ep = 25000 J, h = 44 m

Substitute into equation 3

W = 25000/44

W = 568.18 N.

Hence the weight of the diver = 568.18 N

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3 years ago
Which system of government has a leader that takes power by force
kvv77 [185]

Answer:

The Autocratic system of governance

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<em>Thi</em><em>s</em><em> is</em><em> </em><em>b</em><em>ecause</em><em>,</em><em>in </em><em>Autocratic</em><em> </em><em>sy</em><em>stem</em><em> </em><em>of</em><em> </em><em>gover</em><em>nance</em><em> </em><em>decis</em><em>ion</em><em> </em><em>maki</em><em>ng</em><em> </em><em>is</em><em> </em><em>don</em><em>e</em><em> </em><em>by</em><em> </em><em>onl</em><em>y</em><em> </em><em>indi</em><em>vidual</em><em>.</em><em> </em><em>And</em><em> </em><em>his</em><em>/</em><em>her</em><em> </em><em>dec</em><em>ision</em><em> </em><em>is</em><em> </em><em>fina</em><em>l</em><em>.</em>

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3 years ago
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S waves are also known as
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4 years ago
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