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Margaret [11]
3 years ago
8

Give 2 examples of each major cell group?

Physics
1 answer:
lutik1710 [3]3 years ago
5 0

Answer:

The Prokaryotic Cells and The Eukaryotes

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Three events are observed at a baseball game: I. A baseball is thrown by a pitcher. It starts from rest and is traveling at 38 m
SashulF [63]

Answer:

III. A baseball is traveling at 38 m/s when it hits a wall and bounces away from the wall at -38 m/s

Explanation:

The change in momentum of the baseball is a function of its change in velocity. And can be shown mathematically as;

∆p = m (∆v)

Where ∆p change in momentum

m mass of baseball

∆v change in velocity

Which implies that the higher the change in velocity of the baseball the higher the change in momentum.

I) ∆v = 38 - 0 = 38m/s

II) ∆v = 0 - 38 = -38m/s

III) ∆v = -38-38 = -76m/s

Therefore the third event have the highest change in velocity and thus have the highest change in momentum.

8 0
4 years ago
An airplane used to drop water on brushfires is flying horizontally in a straight line at 180 mi/h at an altitude of 390 ft. Det
Arturiano [62]

Answer:

The water should be released a distance of 1289.88 feet before the plane is on top of the bush fire.

Explanation:

Let's first find the time required for the water to fall down 390 ft onto the bush fire.

Initial Vertical Speed of water = 0

Distance to be covered = 390 ft

Acceleration due to gravity = 32.2 ft/s^2

s=u*t+\frac{1}{2} (a*t^2)

390=0*t+0.5(32.2*t^2)

t = 4.92 seconds

Thus the water should be dropped 4.92 seconds before the plane is over the bush fire. Now we can also find the distance d at which the pilot should release the water:

d = Speed of plane * time

Speed of plane = 180 / (60 * 60) = 0.05 mile/second

d = 0.05 * 4.92 = <u>0.246 miles</u>    OR    <u>1289.88 feet</u>

<u />

Thus, the water should be released a distance of 1289.88 feet before the plane is on top of the bush fire.

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_______ physics cannot account for blackbody radiation.
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The answer is 18 nf in this equation
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Solids have the least kinetic energy
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