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Vilka [71]
3 years ago
6

How is Pluto currently classifed?

Physics
2 answers:
Zanzabum3 years ago
4 0

Answer:

Right now Pluto is classified as a <em>dwarf planet.</em>

Explanation:

melisa1 [442]3 years ago
4 0

Answer:

Dwarf  planet

Explanation:

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An object is accelerating if there is a change in speed and/or ________.
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A change in C. Direction.
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A wave traveling in water has a frequency of 500.0 Hz and a wavelength of 3.00 m. What is the speed of the wave?
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Answer:

1500 m/s

Explanation:

Recall that for a wave,

Speed = frequency x wavelength

here we are given frequency = 500 Hz and wavelength = 3m

simply substitute into above equation

Speed = 500 Hz x 3m

= 1500 m/s

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While pulling a bicycle out of the garage, you must pull it a total of 1.7 m with a force of 27 n. how much work are you doing o
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A mass m1 hangs from a spring k and is in static equilibrium. A second mass m2 drops through a height h and sticks to m1 without
jekas [21]

Answer:

\mathbf{u(t) =\dfrac{m_2g }{k}(1 - cos \omega_n t) + \dfrac{\sqrt{2gh}}{\omega_n}\times \dfrac{m_1}{m_1+m_2}sin \omega _n t}

Explanation:

From the information given:

The equation of the motion can be represented as:

(m_1 +m_2) \hat u + ku = m_2 g--- (1)

where:

m_1 = mass of the body 1

m_2 = mass of the body 2

\hat u = acceleration

k = spring constant

u = displacement

g = acceleration due to gravity

Recall that the formula for natural frequency \omega _n = \sqrt{\dfrac{k}{m_1+m_2}}

And the equation for the general solution can be represented  as:

u(t) = A cos \omega_nt + B sin \omega _n + \dfrac{m_2g}{k} --- (2)

To determine the initial velocity, we have:

\hat u_2^2 = 2gh

\hat u_2 = \sqrt{2gh}

where h = height

Suppose we differentiate equation (2) with respect to time t; we have the following illustration:

\hat u (t) = - \omega_n A sin \omega_n t+ \omega_n B cos \omega _n t + 0

now if t = 0

Then

\hat u (0) = - \omega_n A sin \omega_n (0)+ \omega_n B cos \omega _n (0) + 0

= \omega _n B

Using the  law of conservation of momentum on the impact;

m_2 \hat  u_2=(m_1+m_2) \hat u (0)

By replacing the value of \hat u_2 with \sqrt{2gh

Then the above equation becomes:

m_2 \times \sqrt{2gh}=(m_1+m_2) \ u(0)

Making u(0) the subject of the formula, we have:

u(0)= \dfrac{ m_2 \times \sqrt{2gh}}{(m_1+m_2)}

Similarly, the value of the variable can be determined as follows;

Using boundary conditions

0 = A cos 0 + B sin 0 + \dfrac{m_2g}{k}

0 = A (1)+0+ \dfrac{m_2g}{k}

A =- \dfrac{m_2g}{k}

Also, if  \hat u (0) = \omega_nB

Then :

\dfrac{m_2}{m_1+m_2}\sqrt{2gh} = \omega_n B

making B the subject; we have:

B = \dfrac{m_2}{m_1 + m_2}\dfrac{\sqrt{2gh}}{\omega_n}

Finally, replacing the value of A and B back to the general solution at equation (2); we have the equation of the subsequent motion u(t) which is:

\mathbf{u(t) =\dfrac{m_2g }{k}(1 - cos \omega_n t) + \dfrac{\sqrt{2gh}}{\omega_n}\times \dfrac{m_1}{m_1+m_2}sin \omega _n t}

8 0
3 years ago
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