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maks197457 [2]
3 years ago
10

Plot the line for the equation on the graph. y−2=−2(x+4)

Physics
1 answer:
svetoff [14.1K]3 years ago
5 0

Like and comment down if that was helpful

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How do I do this physics problem about potential energy and kinetic energy?
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Ok i apologise for the messy working but I'll try and explain my attempt at logic

Also note i ignore any air resistance for this.

First i wrote the two equations I'd most likely need for this situation, the kinetic energy equation and the potential energy equation.

Because the energy right at the top of the swing motion is equal to the energy right in the "bottom" of the swing's motion (due to conservation of energy), i made the kinetic energy equal to the potential energy as indicated by Ek = Ep.

I also noted the "initial" and "final" height of the swing with hi and hf respectively.

So initially looking at this i thought, what the heck, there's no mass. Then i figured that using the conservation of energy law i could take the mass value from the Ek equation and use it in the Ep equation. So what i did was take the Ek equation and rearranged it for m as you can hopefully see. Then i substituted the rearranged Ek equation into the Ep equation.

So then the equation reads something like Ep = (rearranged Ek equation for m) × g (which is -9.81) × change in height (hf - hi).

Then i simplify the equation a little. When i multiply both sides by v^2 i can clearly see that there is one E on each side (at that stage i don't need to clarify which type of energy it is because Ek = Ep so they're just the same anyway). So i just canceled them out and square rooted both sides.

The answer i got was that the max velocity would be 4.85m/s 3sf, assuming no losses (eg energy lost to friction).

I do hope I'm right and i suppose it's better than a blank piece of paper good luck my dude xx

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If a simple truss member is known to carry a tensile force, then the internal force drawn on a free-body at a section cut when u
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Answer: b) pointed toward and parallel to the member.

Explanation:

It is shown in the picture attached

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Do you think a hurricane can be considered to be a heat machine? Why?
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No

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Hurricanes always do not bring heat. For example, Hurricane Sandy brought snow.

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the answer is

B)It was the first planet located through mathematical calculations

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