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Goryan [66]
3 years ago
7

What r three positive results of a variation within a population that occur due to natural selection

Physics
1 answer:
Phoenix [80]3 years ago
4 0

Answer:

Traits, evolution, adaptive

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Two physics students shoot a water-bottle rocket from a 1 m tall stand. They calculate that rocket will travel with the given fo
Kitty [74]

Answer:

2 secs; 65 feet

Explanation:

The function guiding the water bottle is given as:

f(x) = -16t² + 64t + 1

The bottle will reach maximum height when velocity, df/dt (velocity is the first derivative of distance) = 0.

Therefore:

df/dt = 0 = -32t + 64

=> 32t = 64

t = 64/32 = 2 seconds

This is the time it will take to reach the maximum height.

To find this height, we insert t = 2 into the function f(x):

f = -16(2)² + 64(2) + 1

f = -(16 * 4) + 128 + 1

f = -64 + 128 + 1

f = 65 ft

Its maximum height is 65 ft.

7 0
3 years ago
Read 2 more answers
Why does sound travel slower at a cold temperature?
tatyana61 [14]
<h2>Answer:</h2><h2>It is due to a refractment of light.</h2>

Sound moves faster in warmer air than colder air the way bends away from the warm air and back towards of air.

7 0
3 years ago
Read 2 more answers
A metal sample of mass M requires a power input P to just remain molten. When the heater is turned off, the metal solidifies in
vovangra [49]

Answer:

L = Pt/M

Explanation:

Power, P= Q/t = mL/t

​

we know that, (Q=m×l)

Now ⇒l= Pt/M

​

Thus l= Pt/M

​

4 0
3 years ago
1)If I'm on an elevator that breaks loose and plummets down the shaft, can I avoid harm by jumping at the last second?
umka2103 [35]

Answer and Explanation:

1) If you were to jump at the last second, you would decrease the impact velocity by 7 mph. This is because most humans have a maximum jump velocity of 7 mph. You may still get hurt, but the damage would be significantly less than if you were to not jump.

2) Bathroom mats are made of fabrics, and fabrics absorb the moisture in the air. If you were to take a shower at any temperature, the fabric will soak up the moisture in the air, so when you touch it, it doesn't feel cold.

The tile floor, however, isn't able to store the moisture into itself. The temperature of the tile will be less than the temperature of your feet.

<u><em>#teamtrees #PAW (Plant And Water)</em></u>

<u><em></em></u>

<u><em>I hope this helps!</em></u>

5 0
3 years ago
While looking at bacteria under a microscope you decide to take a break when u return the amount of bacteria has doubled in size
VikaD [51]
Your break probably only took 20-30 minutes. Bacteria can double every 20-30 minutes. Hope this helped!
~ Sincerely,
     Cutenerd1234
XOXO
4 0
3 years ago
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