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2 years ago

66 POINTS! Which is true about the four atoms shown in figures A, B, C, and D?

Physics

2 answers:

Inessa05 [86]2 years ago

8 0

-- A and B are the same element.

-- C and D are the same element, and a different element than A and B.

This is <em>choice-A</em> .

It all comes down to counting the number of protons in the nucleus of each atom.

Butoxors [25]2 years ago

6 0

Answer:

Explanation:

A and B are isotopes of one another but the same element

C and D are isotopes of one another but the same element

However, A and B have a different proton count than C and D, indicating different elements because the proton count is equivalent to the atomic number.

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Runner A is initially 6.0 km west of a flagpole and is running with a constant velocity of 9.0 km/h due east. Runner B is initia

sergejj [24]

Answer:

0.176m from the flagpole, westward.

Explanation:

Let the Eastward be the positive direction. So initially runner A is at position -6km, running with velocity of 9km/h while runner B is at position 5km running at a velocity of -8km/h. We can conduct the following equation for their distances over the same time t

$s_A = -6 + 9t$

$s_B = 5 - 8t$

When A an B meets, they are at the same position and at the same time. So

$s_A = s_B$

$-6 +9t = 5 - 8t$

$17t = 5 + 6 = 11$

$t = 11/17 = 0.647 s$

$s_A = -6 + 9*0.647 = -0.176 m$

So where they meet is 0.176m from the flagpole, westward.

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2 years ago

The position of a particle moving along the x axis is given in centimeters by x=9.75+1.50t³, where t is in seconds. Calculate(a)

OlgaM077 [116]

Answer:

The solution and the graph are in the attached files below

Explanation:

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2 years ago

A hunter stood at about 60 m away from a tree. He used the bow to release the arrow in order to shoot a coconut held by a monkey

Marianna [84]

Answer:

Time taken to reach the tree

they have given the maximum height which is 25m

therefore...

v=u+at (upward)

0 = 45sin(20)-9.81t

t = 1.56s

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2 years ago

Where can I take a virtual hike for the following assignment?: (ITS FOR OUTDOOR EDUCATION; BUT AGAIN THERE IS NO SUBJECT LABELED

rosijanka [135]

You might just have to take a walk outside instead of a virtual one beside its healthier for you also what kind of area do you live in

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3 years ago

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lana [24]

Answer:

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Explanation:

Hope you get it right!

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2 years ago