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pshichka [43]
3 years ago
7

Mike and Juan were studying forces and decided to do an experiment. they placed four

Physics
1 answer:
lora16 [44]3 years ago
3 0

Answer:

Friction.

Explanation:

The is friction because the blocks are different substances, and different substances are able to move across different flooring more easily.

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Answer:

m_l=550\ kg is the mass of librarian.

Explanation:

Given:

  • mass of the system, m_s=3.3\times 10^{3}\ kg
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m_l\times 2.5=(3300-m_l)\times 0.5

m_l=550\ kg is the mass of librarian.

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