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3 years ago

Karina strikes a match to light a candle. Explain what type of reaction the burning match represents in terms of energy.

Advanced Placement (AP)

2 answers:

hoa [83]3 years ago

6 0

Answer:

<em>It represents an exothermic reaction.</em>

Explanation:

Andrew [12]3 years ago

3 0

A burning match represents an exothermic reaction. The chemicals release energy in the form of heat and light as the reaction progresses.

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Describe the rehab program that is being used with terrorists

Fittoniya [83]

"The basic concept is to provide them all their comparative education, where they are able to decide for themselves what is right and what is wrong, that whatever was told to them previously is not true," Pakistani Col. Iman Bilal said. "It is not all about being radical. It is about being a decent human being first."

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3 years ago

The United States, Canada, and European countries all have comparable policies that distinguish between refugees and economic mi

Kazeer [188]

Answer:

It is important because it's the difference between giving and recieving.

Explanation:

The definition of refugees is "people fleeing conflict or persecution". The definition of economic migrants is "movement of people from one country to another to benefit from greater economic opportunities in the receiving country". The United States, Canada, and European countries turn refugees away because they are fleeing conflict, could potentially bring that conflict or cause conflict to the new place, and don't give back in a major way once they are granted permission to stay. Whereas, economic migrants are, mostly, not fleeing conflict so the place wouldn't have to fear foreign affairs and consequences, as well as the fact that the migrants will, in some way, give back to them in a way that benefits the place in multiple ways or a major way (such as giving back in the form of exceptional work or labor). This is why they have policies that distinguish between refugees and economic migrants - they want to invite in the people that will benefit them whilst keeping those who won't benefit them out.

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2 years ago

Hello, I need help with a calculus FRQ. My teacher has given a hint that this last part has to do with the intermediate value th

lesya [120]

Answer:

Yes, at a time t such that (√2)/2 ≤ t ≤ 2.

Explanation:

To answer the question

Therefore, where the domain of the function is the set of all real numbers x for which f(x) is a real number we have

For Chloe's velocity

$C(t) = t\times e^{4-t^2} \ for \ 0\leq t\leq 2$

Finding the boundaries of the function gives;

$0\times e^{4-0^2} = 0$ and $2\times e^{4-2^2} = 2$

At t = 1, we have $1\times e^{4-1^2} = e^{3} = 20.086$

We find the maximum point as follows;

$\frac{\mathrm{d} \left (t\times e^{4-t^2} \right )}{\mathrm{d} x}=0$

From which we have;

$\frac{\mathrm{} e^{4-t^2} - t\times e^{4-t^2} \times2\times t }{(e^{4-t^2} )^2}=0$

$e^{4-t^2} - t\times e^{4-t^2} \times2\times t }=0$

$e^{4-t^2}(1 - t\times2\times t })=0\\e^{4-t^2}(1 - 2\times t^2 })=0\\$

$e^{4-t^2}=0$ or $(1 - 2\times t^2 })=0$

∴ 1 = 2·t² and from which t = (√2)/2

Hence the function C(x) is decreasing from t = (√2)/2 to t = 2

For Brandon

For 0 ≤ t ≤ 1, 1 ≤ B(t) ≤8 and for 1 < t ≤ 2, 8 < B(t) ≤ 1.5

1 ≤ f(x) ≤ 1.5

Given that the function B(t) is differentiable, therefore, continuous, there exists a point at which the function C(t) and B(t) intersects given that;

For 0 ≤ t ≤ (√2)/2, 0 ≤ C(t) ≤ 23.416 for (√2)/2 < t ≤ 2, 23.416 > C(t) ≥ 2

and for 0 ≤ t ≤ 0 1 ≤ B(t) ≤ 8 and for 1 < t ≤ 2, 8 > B(t) ≥ 1.5

Therefore, the curves intersect at in between (√2)/2 ≤ t ≤ 2.

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3 years ago

Explain how an unglazed porcelain tile can be used to identify a mineral

Stella [2.4K]

It can only identify if it's gold. By rubbing the tile on hold should leave a gold mark on tile

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3 years ago

Why is puerto rico treated as second class citizens

IrinaK [193]

Answer:ll Puerto Ricans living in the U.S. and in Puerto Rico treated as second class “citizens”,because we are second class for the U.S. Ruling class.

Explanation:

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3 years ago