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alexdok [17]
4 years ago
9

when a seagull picks an oyster up into the sky and then lets it drop on the rocks below to open the shell; where is the oysters

potential energy greatest? where is it’s kinetic energy greatest?
Physics
2 answers:
Sati [7]4 years ago
5 0

Answer:

When a seagull picks an oyster up into the sky and then lets it drop on the rocks below to open the shell; where is the oyster's potential energy greatest? Where is its kinetic energy greatest?

Potential energy is greatest at maximum height; kinetic energy is greatest just before the oyster strikes the ground.

Explanation:

vazorg [7]4 years ago
3 0

Answer:

Potential energy is greatest right before the bird drops it. Kinetic energy is greatest the instant before the oyster hits the ground

Explanation:

Potential energy is the energy stored in an object you store energy in an object by raising it higher in the air.

Kinetic energy is moving energy as the oyster falls it loses the stored energy and it goes into the moving energy which is kinetic.  

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What speed would a fly with the mass of 0.55 g need in order to have the same kinetic energy as the automobile in the term 19
larisa86 [58]

<u>The question does not provide enough information to complete the answer, so I'll assume the needed data to help you to solve your own problem</u>

Answer:

<em>The fly should need to move at 9,534.6 m/s to have the same kinetic energy as the automobile</em>

Explanation:

<u>Kinetic Energy </u>

Is the capacity of a body to do work due to its speed and is computed by

\displaystyle K=\frac{mv^2}{2}

We are not given enough data to compare the kinetic energy of the fly with that of the automobile. We'll assume the following characteristics:  

m_a=500\ kg

v_a=10\ m/s

So its kinetic energy is

\displaystyle K_a=\frac{(500)10^2}{2}

\displaystyle K_a=25,000\ J

The mass of the fly is  

m_f=0.55\ gr=0.00055\ kg

To have the same kinetic as the automobile:

\displaystyle \frac{m_fv_f^2}{2}=25,000

Solving for v_f

\displaystyle v_f=\sqrt{\frac{2(25,000))}{m_f}}

\displaystyle v_f=\sqrt{\frac{50,000}{0.00055}}

v_f=9,534.6\ m/s

The fly should need to move at 9,534.6 m/s to have the same kinetic energy as the automobile

5 0
3 years ago
A river is flowing south at a rate of 3 m/s. Steven can roe directly across the river if he aims the raft 30 degrees. What rate
levacccp [35]

Answer:

Steven has to row at a speed to reach the same horizontal spot at the other side of the river is, V = 6 m/s

Explanation:

Given data,

The river flowing south at the rate, v = 3 m/s

To reach the other side directly across the river, he aims the raft, Ф = 30°

The speed of his raft across the river is given by the formula,

                                          V = v / Sin Ф

                                             = 3 / Sin 30°

                                              = 6 m/s

Steven has to row at a speed to reach the same horizontal spot at the other side of the river is, V = 6 m/s

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The body senses whether it is upright or lying down or whether it is moving or standing still through the vestibular system, which is in the upper portion of the inner ear.
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Answer:

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Explanation:

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