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garri49 [273]
3 years ago
13

De acordo com o material teórico da unidade 1 o conhecimento possui dois elementos básicos, quais são eles: a. um objeto e um pr

oblema b. um sujeito e um objeto c. um sujeito e um núcleo d. um objeto e um núcleo e. um sujeito e um problema
Advanced Placement (AP)
1 answer:
arlik [135]3 years ago
5 0

Answer:

c. um sujeito e um núcleo is correct option in the given problem statement.

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Surface Area of a can is 517.8 cm^2. Maximize the volume of this can using the measured surface area.
mafiozo [28]

Answer:

r = 5.24 --- Radius

h = 10.48 --- Height

Explanation:

Given

Object: Can (Cylinder)

Surface\ Area = 517.8cm^2

Required

Maximize the volume

The surface area is:

S.A = 2\pi r^2 + 2\pi rh

Substitute 517.8 for S.A

517.8 = 2\pi r^2 + 2\pi rh

Divide through by 2

258.9 = \pi r^2 + \pi rh

Factorize:

258.9 = \pi r(r + h)

Divide through by \pi r

\frac{258.9}{\pi r} = r + h

Make h the subject

h = \frac{258.9}{\pi r} - r --- (1)

Volume (V) is calculated as:

V = \pi r^2h

Substitute (1) for h

V = \pi r^2(\frac{258.9}{\pi r} - r)

Open Bracket

V = 258.9r - \pi r^3

Differentiate V

V' = 258.9 - 3\pi r^2

Set V' to 0

0 = 258.9 - 3\pi r^2

Collect Like Terms

3\pi r^2 = 258.9

Divide through by 3

\pi r^2 = 86.3

Divide through by \pi

r^2 = \frac{86.3}{\pi}

r^2 = \frac{86.3*7}{22}

r^2 = \frac{604.1}{22}

Take square root of both sides

r = \sqrt{\frac{604.1}{22}

r = 5.24

Recall that:

h = \frac{258.9}{\pi r} - r

Substitute 5.24 for r

h = \frac{258.9}{\pi * 5.24} - 5.24

h = \frac{258.9*7}{22 * 5.24} - 5.24

h = \frac{1812.3}{115.28} - 5.24

h = 15.72 - 5.24

h = 10.48

Hence, the dimension that maximize the volume is:

r = 5.24 --- Radius

h = 10.48 --- Height

7 0
3 years ago
What is encoding failure
Y_Kistochka [10]

Encoding Failure refers to the brain's occasional failure to create a memory link.

7 0
3 years ago
Read 2 more answers
If the pond is resampled a year later, which of the following would best indicate that the pond had been adversely affected by a
Usimov [2.4K]

This question is not complete; here is the complete question:

A one-hectare pond is sampled in early September. The sample yields 1 small catfish as well as 17 benthic invertebrates that represent 10 species.

If the pond is resampled a year later, which of the following would best indicate that the pond had been adversely affected by adjacent development?

A. An uncommon species has become more numerous

B. An increase in low-tolerance species has occurred

C. A decrease in high-tolerance species has occurred

D. Phylogenetic diversity has occurred

E. The biodiversity of the pond has decreased

The answer to this question is E. The biodiversity of the pond has decreased

Explanation:

In ecology, an ecosystem can be affected by adjacent developments including human developments or even other ecosystems and this can lead to positive or negative consequences.

In this context, one example that shows the was an adverse effect is "The biodiversity of the pond has decreased" because the reduction in diversity represents a major thread for an ecosystem as this makes species more vulnerable to disappear. Also, this can be caused by factors such as pollution caused by human development or major predator of the adjacent ecosystem feeding on organisms in the main ecosystem. Besides this, in the first sample, there were multiple species and a reduction in the second sample shows the ecosystem was weakened.

3 0
3 years ago
What is the square root of 1.45?<br><br> Brainliest will be given for the correct answer.
charle [14.2K]

Answer:

√1.45 = 1.2041594578792

Explanation:

Step 1:

Divide the number (1.45) by 2 to get the first guess for the square root .

Step 2:

Divide 1.45 by the previous result. d = 1.45/0.725 = 2.

Average this value (d) with that of step 1: (2 + 0.725)/2 = 1.3625

previous value = 0.725 - 1.3625 = 0.6375.

0.6375 > 0.001

Now we repeat the step

Step 3:

Divide 1.45 by the previous result. d = 1.45/1.3625 = 1.0642201835.

Average this value (d) with that of step 2: (1.0642201835 + 1.3625)/2 = 1.2133600918

Error = new guess - previous value = 1.3625 - 1.2133600918 = 0.1491399082.

0.1491399082 > 0.001.

Step 4:

Divide 1.45 by the previous result. d = 1.45/1.2133600918 = 1.1950285903.

Average this value (d) with that of step 3: (1.1950285903 + 1.2133600918)/2 = 1.2041943411 (new guess).

Error = new guess - previous value = 1.2133600918 - 1.2041943411 = 0.0091657507.

0.0091657507 > 0.001.

Step 5:

Divide 1.45 by the previous result. d = 1.45/1.2041943411 = 1.2041245757.

Average this value (d) with that of step 4: (1.2041245757 + 1.2041943411)/2 = 1.2041594584

- previous value = 1.2041943411 - 1.2041594584 = 0.0000348827.

0.0000348827 <= 0.001. accuracy, we stop the iterations and use 1.2041594584 as the square root.

4 0
3 years ago
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Retirees are the fastest growing group to go bankrupt <br><br> True or False ?
guajiro [1.7K]

the retirees is false

hdue

4 0
3 years ago
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