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MAXImum [283]
3 years ago
8

A ______ is a factor in an experiment that can be manipulated.

Biology
1 answer:
Dvinal [7]3 years ago
5 0
A variable is a factor
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A 6,000 kg train car is moving to the right at 10 m/s and connects to a 4,000-kg train car that wasn't moving. What is the veloc
SIZIF [17.4K]

6 m/s

This type of collision is a <u>Inelastic collision </u>

Explanation:

We begin by finding the momentum of the initial train car;

Remember that momentum is given by the formulae mass (kg) * velocity (m/s)

Therefore;

Momentum = 6000 * 10

= 60,000 kg⋅m/s

The other car has zero momentum because;

4000 * 0

= 0

When the two train cars collide, the total momentum will be;

60,000 + 0 = 60,000

Therefore to find the velocity, well use the same formulae;

p = mv  whereby;

p – momentum

m – mass

v – velocity

60,000 = (6000 + 4000) * v

v = 60,000 / 10,000

v = 6

= 6 m/s

This is an elastic collision because we are assuming that no energy is lost in the collision. Most collisions, however, are not elastic but rather inelastic. In inelastic collision some of the kinetic energy is lost to the environment in some other form of energy such as heat energy.

Learn More:

For more on elastic collisions check out;

brainly.com/question/10864123

\brainly.com/question/12201392

#LearnWithBrainly

7 0
3 years ago
How does photosynthesis and cellular respiration contribute to the carbon cycle?
lora16 [44]

Answer:

Cellular respiration releases carbon dioxide into the environment, photosynthesis pulls carbon dioxide out of the atmosphere.

Explanation:

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3 years ago
Use the phylogenetic tree to the right to determine which statement below is true.
WINSTONCH [101]
<span>C Rodents and rabbits are most closely related to primates. </span>
8 0
3 years ago
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The branch of anthropology that is concerned with discovering what makes human beings different from other living organisms and
Kaylis [27]
The correct answer is biological anthropology, or physical anthropology. 
It is centered around human beings only, with respect to their common or different features that they either share or don't share with their related non-human primates and other ancestors. It deals with human evolution, the study of their behavior, reproduction, etc.
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4 years ago
Appositional growth ends in
adell [148]
The answer would be (C) i believe. 
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3 years ago
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