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scoundrel [369]
3 years ago
8

A roller coaster car moving along a track is energy conserved in this system

Chemistry
1 answer:
elena-s [515]3 years ago
5 0

Yes- as long as the roller coaster car is not powered once it leaves the station and energy loss due to resistance can be ignored.

Energies of a system:

  • Potential Energy
  • Kinetic Energy
  • The term "Mechanical Energy" refers to the sum of both types of energy.

A roller coaster car moving along a level track with an initial velocity has mechanical energy in the form of kinetic energy.

The car would slow down while gaining height as its kinetic energy converts to gravitational potential energy when moving upwards along the track. It would have no kinetic energy since all its mechanical energy are now in the form of gravitational potential energy in case it comes to a stop before reaching the top of the track.

Similarly, the car gains speed while losing height as some of its gravitational energy is converted to kinetic energy when it travels downwards.

The mechanical energy of this vehicle conserves since any of the movements, moving upslope, downslope, or level, would ensure that

<em>Loss in Potential Energy </em>=<em> Gain in Kinetic Energy</em>

and vice versa.

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What is the connection between Oobleck and the mantle?
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Answer:

Oobleck is a mixture of cornstarch & water, a substance that behaves like the Mantle.

Explanation:

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Imagine that you have a metal bar sitting half in the sun and half in the dark. On a sunny day, the part of the metal that has b
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Answer:

It will feel hot.

Explanation:

The part of the metal that has been sitting in the sun will heat up, and because metal is a good conductor,<em> the part sitting in the sun will heat up the part sitting in the dark</em>.

We say metal is a good conductor because it has<em> high thermal conductivity</em>, which mean heat will flow from the hot section of the bar to the cold section of the bat.

6 0
3 years ago
Given the equation for a system at equilibrium:
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Explanation:

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For the given equation:

N_2(g)+3H_2(g)\rightleftharpoons 2NH_3(g)+energy

If the concentration of N_2 is increased , according to the Le-Chatlier's principle, the reaction has to shift to right or forward direction. In order to do that  the concentration of products has to increase.

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Look at the diagram below. What type of bond does it show?
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What relationship is described by the formula below? (mass of the element/mass of the compound) x 100
Fiesta28 [93]
Introduction
empirical formula
A table of values shows a list of the values for an independent variable, x, matched with the value of the dependent variable, y. In many cases, an equation can be used to relate the two values. If you know the equation, you can easily generate a table of values.


If you are given the table of values, you must determine how the two values are related and then write an equation that shows the relationship.

xy-2-1-100112When looking at the relationship between the y-values and the x-values, it's easy to see that each y-value is 1 more than the x-value. Therefore, the equation that describes this relationship is y = x + 1.

 

Develop a Rule When Given a Table of Values

Writing an Equation for a Table of Values

Look at the table below. There does not appear to be a constant rate of change.



In this example, we look at the ratio of the change in the pattern of y-values and x-values.









Even though there did not appear to be a constant rate of change, there is actually a constant rate of change of 2.

We're almost ready to write our equation.

We now know the value for m (the slope) in the equation y = mx + b is 2. Since m is 2, we know that each x-value is being multiplied by 2.

What else is happening to the x-value to get the corresponding y-value?

xProcessy-32(-3) + 3-3-12(-1) + 3132(3) + 3962(6) + 31572(7) + 317

We also need to add 3 to the product in order to get the corresponding y-value.

The equation that represents this table of data is y = 2x + 3.


6 0
3 years ago
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