3 years ago

How did dalton improve the atomic theory more than 2000 years after democritus's hypothesis about atoms?

1 answer:

6 0

<span>Dalton improved the atomic theory by establishing that elements are made of atoms & that all atoms of an element are identical.</span>

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Marina86 [1]

Answer:

I think It Should be Star B

Explanation:

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3 years ago

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Draw two unique free body diagrams that each show a net force of 30 N to the left.

Reil [10]

Answer:

just trace a picture of it.

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4 years ago

For for each situation say how the ideas of force pressure and area can be applied :

fomenos

<h3 /><h3><u><em>Solution-:</em></u></h3><h3><u><em>more force as expansion is much</em></u></h3>

<u><em>also, less force area is much</em></u>

<h3> mark me Brainliest</h3>

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2 years ago

A 2.00-kg ball is moving at 2.20 m/s toward the right. It collides elastically with a 4.00-kg ball that is initially at rest. 1)

loris [4]

Elastic collision is when kinetic energy before = kinetic energy after

Ek= 1/2mv^2

total before
Ek=1/2(2)(2.2^2) = 4.84 J

total after
Ek= 1/2(2+4)(v^2) = 3v^2

Before = after
4.84=3v^2 | divide by 3
121/75 = v^2 | square root both sides
v=1.27 m/s

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3 years ago

A ball is thrown straight up. What can be said about the sign of work done by the force exerted by gravity while the ball moves

dolphi86 [110]

Answer:

I think the answer is E....

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3 years ago