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tamaranim1 [39]

3 years ago

5

Which roles does pressure play during a volcanic eruption? Check all that apply.

Advanced Placement (AP)

2 answers:

Korolek [52]3 years ago

6 0

Answer:

A:Pressure decreases as magma rises

B:Pressure traps dissolved gases in magma

E:Pressure from expanding gases forces magma through the pipe and vent

solmaris [256]3 years ago

5 0

Pressure decreases as magma rises and pressure from expanding gases forces magma through the pipe and vent

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The 5 digit number 5abc9 is the square of an integer where a, b, and c represent a missing digit. If all five digits are differe

frozen [14]

54289 = 233^2

You know the last digit of the squared number is 3 or 7, so just try numbers ending with those from 220 to 250

4 0

4 years ago

Read 2 more answers

Compare and contrast the colonialist view of “genetic superiority” vs. Diamond’s view of New Guineans in terms of abilities?  

Varvara68 [4.7K]

<span>Diamond is an evolutionary biologist, interested in adaptations, and he proceeds to speculate that New Guineans exhibit these heightened-mental-activity traits in response to their environment, which presents them with constant and varied challenges. He gets away with it because (1) this statement is buried inside his main thesis, which is in accord with the fundamental dogma (Western superiority is just an accident of geography), and (2) his superior racial group is non-white, and it's okay to call whites inferior</span>

6 0

3 years ago

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

A state that has different parts separated by a physical or human barrier is

pogonyaev

<u>Answer- </u>

Fragmented (A state that is separated by a physical or human barrier.)

8 0

3 years ago

Miguel is conduction a probabilaty experiment using a coin. Make a list showing all posibble outcome if he flips the coin one ti

worty [1.4K]

Answer:

{H1, H2, H3, H4, T1, T2, T3, T4}

Explanation:

A coin : {H, T}

Spinner : {1, 2, 3, 4}

Sample space for a coin toss and a spin :

Arranging possible outcomes of the spinner horizontally and the possible outcomes of the coin vertically ; we Obtain :

____ 1 ____ 2 ____ 3 _____ 4

H__ H1 ___ H2 ___ H3 ___ H4

|_______________________

T__ T1 ___ T2 ____ T3 ___ T4

HENCE, List of all possible outcomes :

{H1, H2, H3, H4, T1, T2, T3, T4}

8 0

3 years ago