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Varvara68 [4.7K]

3 years ago

14

anyone good with identifying rocks? I'm trying to sort out all my rocks and gemstones and I can't seem to figure this one out. i

t might be man-made, but I just really want to get an ID for this one.

Advanced Placement (AP)

1 answer:

klemol [59]3 years ago

8 0

Answer:

is there any way u have a streak plate?

Explanation:

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The depolarization of a neural membrane creates what?

dezoksy [38]

I would say it creates action potential
Hope this helps :3

8 0

3 years ago

A __________ is a separate page that lists every source used. Question 4 options: works cited page introduction magazine page co

Annette [7]

Answer:

works cited page

Explanation:

The Works Cited page is the list of sources used in the research paper. It should be its own page at the end of the paper.

6 0

3 years ago

A ball is thrown into the air at a velocity of 44 feet per second. Its height in feet, h after t seconds is represented by the e

Lady_Fox [76]

Answer:

0.447 sec

Explanation:

velocity = distance/ time

distance 'h' is a function of time 't' given by

$h = 12t^{2} + 44t + 16$

⇒ differentiating equation

⇒ velocity = $\frac{dh}{dt} = 24t + 44$

⇒ acceleration = $\frac{d^{2}h }{dt^{2} }$ = 24 $\frac{ft}{sec^{2} }$

deceleration due to gravity = -9.8 m/ $sec^{2}$ = - 9.8 x 3.281 = - 32.154 ft/ $sec^{2}$

Net deceleration = 24 - 32.154 = - 8.15 ft/ $sec^{2}$

at maximum height v = 0

$v^{2}$ = $u^{2}$ + 2ah

⇒ 0 = $44^{2}$ + 2 (-8.15)h

⇒ h = 118.72 ft⇒

118.72 = 12 $t^{2}$ + 44t + 16

⇒ $12t^{2} +44t$ - 102.72 = 0

⇒ t = -44 ± $\sqrt{44^{2} - 4(12)(102.72) }$ / (2 x 12)

t = 0.447 sec

6 0

3 years ago

The sum of Pete's and Sam's ages is 30. Five years ago, Pete was 3 times as old as Sam. How old is Sam?

Nikitich [7]

Answer:

Sam is 10 years old.

Explanation:

Lets just say this was asked in 2020 meaning 5 years ago was 2015.

If Pete was 15 in 2015 and his age was 3x the age of Sam, Sam would be 5.

15/3= 5

Now that 5 years has passed since 2015 Sam is 10 and Pete is 20.

(15+5) + (5+5)

Adding the two ages in current times, the sum is 30.

20 + 10 = 30

8 0

3 years ago

How do you currently understand the politics, perhaps the way the politics (feminism, political correctness, immigration, etc) a

-Dominant- [34]

Answer:

I understand it by them trying to have their own good picture and not look like the bad person in a situation that has gone downhill.

Explanation:

it's just my personal opinion

3 0

3 years ago