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bagirrra123 [75]
3 years ago
11

What was the significant change that Glenn Seaborg made to Mendeleev’s periodic table?

Physics
1 answer:
stira [4]3 years ago
7 0

Answer:

The Seaborg introduced the whole new row to the periodic table called actinides.

Explanation:

The american scientist Glenn Seaborg has many important contribution the chemistry. His work made a significant change in the mendeleev's periodic table. He introduced new row that is placed below the lanthanides row, called actinides.

He was co-discoverer or principle discoverer of plutonium and einsteinium. He was responsible for the discovery of more than 100 medical isotopes.

Thus, the Seaborg introduced the whole new row to the periodic table called actinides.

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castortr0y [4]
Calculate velocity at halfway to the ground.

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v = root (2*9.81m/s^2*25)

v = 69.367175234 m/s

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2 years ago
The total amount of energy contained in an object
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The total amount of energy stored in the particles of an object is called its internal energy. The internal energy of an object is made up of the kinetic energy due to the random motion of the particles and the potential energy due to the interactive forces among the particles.

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3 years ago
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pantera1 [17]

1,000 grams = 1 kilogram
so 55 megagrams = 55,000 kilograms

100 cm = 1 meter
so 500 cm = 5 meters

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Weight = (mass) x (gravity)

========================================

Work = increase in potential energy =

               (weight) x (height) =

             (mass) x (gravity) x (height) =

             (55,000 kg) x (9.8 m/s²) x (5 m) =

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A rocket starts from rest to 12s , it’s speed became 120m. find the distance it covered
gayaneshka [121]

Answer:

1440 m

Explanation:

Speed = Distance/Time

Distance = Speed × Time

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               = <u>1440m</u>

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Stephen is worried he has a fever. His dad is a scientist though and only has thermometer that measures in kelvin and is measure
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Answer: im trying to find the same answer too

Explanation

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