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Contact [7]
3 years ago
8

Evolution refers to which of the following? A. having traits that help a species survive B. the gradual change of a species over

time C. having traits that help a single organism survive D. the gradual change of a single organism over time [And this is science i just can figure it out
Physics
1 answer:
Lelechka [254]3 years ago
8 0
B. the gradual change of a species over time.
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Can kintic friction affect mechanical energy
Nesterboy [21]
Yes. Kinetic energy is a form of mechanical energy and friction will turn that kinetic energy into heat.
3 0
3 years ago
A physics student swings a pail of water in a vertical circle 1.0 m in radius at a constant speed. If the water is NOT to spill
love history [14]

Answer:

(A) 3.1 m/s

(B) 2.0 s

Explanation:

At the minimum speed, the force of gravity equals the centripetal force.

mg = m v² / r

v = √(gr)

v = √(9.8 m/s² × 1.0 m)

v = 3.1 m/s

The time is the circumference divided by the speed.

t = (2π × 1.0 m) / (3.1 m/s)

t = 2.0 s

7 0
3 years ago
A ball is kicked from a height of 20 meters above the ground. If the initial velocity is 10 m/s, how long is the ball in flight
nasty-shy [4]
S=20 m
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t=s/v
= 20/10
= 2 s.
8 0
3 years ago
This formula equation is unbalanced.
Grace [21]
The answer is:  [C]:  "4" .
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Note:  To balance this equation, the coefficient, "4", should be placed in front of the PCl₃ ;  and the coefficient, "6", should be placed in front of the Cl₂ .
________________________________________________________
The balanced equation is:
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             P₄ (s) + 6 Cl₂ (g)  <span>→ 4 </span>PCl₃ (l)   .
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6 0
2 years ago
Object A attracts object B with a gravitational force of 5 newtons from a given distance. If the distance between the two object
enyata [817]

Answer:

10 newtons, because the gravitaional force willbe stronger the closer it gets.

7 0
3 years ago
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