3 years ago

Which is not part of John Dalton’s atomic theory?

Physics

2 answers:

avanturin [10]3 years ago

8 0

Answer:

The correct answer is D. Atoms are made up of smaller particles.

Explanation:

Nataliya [291]3 years ago

6 0

The answer is C because they are made up of different sizes and mass.

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An object attached to one end of a spring makes 20 complete vibrations in 10s. Its frequency is:

Alexxandr [17]

Answer:

0.50 s

Explanation:

4 0

3 years ago

A 68.5kg astronaut floating motionless next to the space station throws a 2.25kg tool away from her at 3.20m/s. With what speed

valkas [14]

Answer:

-0.105 m/s

Explanation:

Given that

Mass of the astronaut, m(a) = 68.5 kg

Mass of the tool, m(t) = 2.25 kg

Speed of the tool after it is thrown, v(t) = 3.20 m/s

We know that momentum of a particle,

p = mv

See the attachment for calculations

Therefore, the speed is 0.105 m/s and it moves in the opposite direction.

5 0

4 years ago

What components of an ecosystem do organism respond to

sweet [91]

All components, Abiotic to Biotic

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3 years ago

Find the sum 5.24 g, 43.261 g, and 7.3458 g. Write your answer with the correct amount of significant figures.

lapo4ka [179]

Answer:

This is how I do it:

5.24 rounded to one significant figure is 5
43.261 rounded to one significant figure is 40.
7.3458 rounded to one significant figure is 7.
5 + 40 + 7 is 52 g

Hope this helps you.

Explanation:

7 0

3 years ago

Shelli is a student describing the resonance of a metal beam. She demonstrates that the sound dims when the beam is vibrated at

ArbitrLikvidat [17]

Shelli will most likely say that the sound produced by the resonance of a metal is affected by the frequency at which the metal is vibrated. There is a certain frequency that will create a dim sound. If the frequency is changed to the right setting, the sound will intensify.

5 0

4 years ago