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AnnyKZ [126]
3 years ago
14

Which of the following is the correct definition of mechanical energy? A. energy stored in chemical bonds of molecules B. energy

an object has because of its motion or position C. energy of an object due to the random motion of its atoms and molecules D. energy resulting from the flow of charged particles, such as electrons or ions
Physics
2 answers:
Alex787 [66]3 years ago
6 0

The correct answer is B. Energy an object has because of its motion or position

Explanation:

In physics, the mechanical energy of a body or object is determined by the position and/or motion. Due to this, the mechanical energy includes both the kinetic energy (energy during movement) and the potential energy (energy according to location or stored energy). Additionally, the mechanical energy as other types of energy is constant if no forces are acting over it in an ideal system, but in reality, this type of energy is influenced by external forces, for example, friction. Thus, the correct definition of mechanical energy is " Energy an object has because of its motion or position".

Lubov Fominskaja [6]3 years ago
5 0

Which of the following is the correct definition of mechanical energy?

B. energy an object has because of its motion or position

Hope this answers your question!

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Consider as a system the Sun with Saturn in a circular orbit around it. Find the magnitude of the change in the velocity of the
Doss [256]

Answer:

v_{su} = 19.44 m/s

Explanation:

m_{su}=5.68x10^{29}kg\\m_{sa}=5.68x10^{26}kg

T=9.29x10^8\\r_{o}=1.43x10^{12}

If the sun considered as x=0 on the axis to put the center of the mass as a:

m_{su}*r_{o}=(m_{sa}+m_{su})*r_{1}

solve to r1

r_1=\frac{m_{sa}*r_{o}}{m_{sa}+m_{su}}=\frac{5.68x10^{26}*1.43x10^{12}}{5.68x10^{26}+5.68x10^{26}}

r_1=1.428x10^9m

Now convert to coordinates centered on the center of mass.  call the new coordinates x' and y' (we won't need y').  Now since in the sun centered coordinates the angular momentum was  

L = \frac{m_{sa}*2*pi*r_1^2}{T}

where T = orbital period

then L'(x',y') = L(x) by conservation of angular momentum.  So that means

L_{sun}=\frac{m_{sa}*2*\pi *( 2r_{o}*r_1 -r_1^2)}{T}

Since

L_{su}= m_{su}*v_{su}*r_1

then

v_{su}=\frac{m_{sa}*2*pi*(2r_{o}*r_{1}-r_{1}^2)}{T*m_{sa}*r_1}

v_{su} = 19.44 m/s

7 0
3 years ago
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vivado [14]

Jupiter  that is the answer

good luck

6 0
3 years ago
In avarage,How many times do a child breathe in a
ollegr [7]
On an approximate scale, A child breaths 20 times a minute as compared to only 12 to 16 in resting phase of an Adult.

So, In 60 minutes (1 hour), They breathe = 20 * 60 = 1200
In 24 hours (1 day), They breathe = 1200 * 24 = 28,800

In short, Your Answer would be: 28,800

Hope this helps!
5 0
3 years ago
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mina [271]

Answer:

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3 0
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MissTica

Answer:

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