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3 years ago

Select the example that best describes a renewable resource.

Physics

2 answers:

Strike441 [17]3 years ago

4 0

b. B. In some areas, heat from deep in the Earth can be used to heat water and homes.

densk [106]3 years ago

3 0

B. "In some areas, heat from deep in the Earth can be used to hear water and homes". Because the heat is never ending and isn't known to slowly deprive.

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for a certain chemical reaction, the reactants contain 52 kj of potential energy and the products contain 32 kj how much energy

Luden [163]

B, is the answer. (20 kj is released)

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3 years ago

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Is my answer correct? Please i need to know

Alexeev081 [22]

Yes. Your answer is correct. I hope you do well on the quiz or whatever it is.

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3 years ago

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At a distance of 11 cm from a presumably isotropic, radioactive source, a pair of students measure 65 cps (cps = counts per seco

Alborosie

To solve the problem, it is necessary the concepts related to the definition of area in a sphere, and the proportionality of the counts per second between the two distances.

The area with a certain radius and the number of counts per second is proportional to another with a greater or lesser radius, in other words,

$A_1*m=M*A_2$

$A_i =Area$

M,m = Counts per second

Our radios are given by

$r_1 = 11cm$

$R_2 = 20cm$

$m = 65cps$

Therefore replacing we have that,

$A_1*m=M*A_2$

$4\pi r_1^2*m = M * 4\pi R_2^2 M$

$r^2*m=MR^2$

$M = \frac{m*r^2}{R^2}$

$M = \frac{65*11^2}{20^2}$

$M = 19.6625cps$

Therefore the number of counts expect at a distance of 20 cm is 19.66cps

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4 years ago

9. Ripening is a _______________ and spoiling is a ______________.

IrinaK [193]

Answer:

Explanation:

Chemical reaction,physical

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2 years ago

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An ant crawls 50 cm to the right, stops, and then crawls 30 cm to the left. Calculate the distance that the ant travels, and cal

borishaifa [10]

Answer and Explanation:

If the ant was to crawl 50cm to the right, then come back 30 cm, then the total distance walked would be 80cm.

- Combine 50cm and 30cm to get 80 cm.

For displacement, the answer is 20 cm.

- When calculating displacement, you use the initial (starting) distance. and subtract that from the final distance, giving you the displacement, or the amount traveled from the starting point to the final point if you were to make a straight line from the starting point to end point. (0 to 50, then back 30 the same direction, so subtract 30 from 50 to get 20)

#teamtrees #PAW (Plant And Water)

I hope this helps!

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3 years ago

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