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Lelu [443]
4 years ago
8

PLEASE HELP!!!

Physics
1 answer:
anastassius [24]4 years ago
7 0
Answer: 0 km/h

Explanation:
As a vector, the plane's velocity is 100 km/h (west) - 100 km/h (east)  = 0 km/m.
To an observer on the ground, the plane will be standing still.
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46 POINTS will mark brainliest if correct
Mazyrski [523]

46 POINTS will mark brainliest if correct

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A.7.21 x 103 m/s

B.8.45* 104 m/s

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4 years ago
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Explain what happens to the atoms in the reactants during a chemical reaction
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3 years ago
a subsrance has an atomic number of 80. How many protons and electrons do atoms of the substance have? what is the subsance?
valentinak56 [21]

Answer:

The substance is Mercury. It has 80 electrons revolving around nucleus and 80 protons inside nucleus.

Explanation:

Atomic number of atom represent the number of electrons and protons of the atom. Thus,

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3 years ago
28. The mass of a steel building frame is 5500 kg. What power is used to raise it to a helght of 5.0 m If the work is done in 12
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Answer:

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To find power, divide energy per time:

27500J / 12s =~  2292W

Did it in a rush, any problems message me

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Answer:

answer in the picture provided.

Explanation:

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