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3 years ago

WhAt is this question??????????

Physics

1 answer:

valina [46]3 years ago

8 0

Answer:

Period = 7

Group = Actinides group

Family = Actinides Family

Explanation:

uranium found in seventh row or seventh period of the periodic table.

uranium is the member of Actinoides group it is also called Actinide group, And it has element whose atomic is number is 89 to 103. The atomic number of the uranium is 92. So, the uranium element is belongs to Actinide group

Uranium found in actinide family of periodic table, and actinides family has element whose atomic number is greater than or equal to 89 and less than or equal to 103.

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A football coach walks 18 meters westward, then 12 meters

Brrunno [24]

Answer:

Displacement = 20

Direction = westward

Explanation:

Given that a football coach walks 18 meters westward, then 12 meterseastward, then 28 meters westward, and finally 14 meters

eastward.

To calculate the displacement,

Let eastward = negative

Westward = positive

Displacement = 18 - 12 + 28 - 14

Displacement = 46 - 26

displacement = 20 metre

Since the answer is positive, the direction is westward.

5 0

3 years ago

In separate experiments, four different particles each start from far away with the same speed and impinge directly on a gold nu

nikitadnepr [17]

Answer:

Potential energy at the beginning: Ui =Qq/R*k ≈ 0 (particles are far apart)

Kinetic energy at the beginning: KEi = $mv^{2}$ /2

Potential energy at the end: Uf =(Qq/r)*k

Kinetic energy at the beginning: KEf = 0

From energy conservation:

r = 2*Qk/ $v^{2}$ *q/m

Ranking of the closest approach to the gold nucleous comes from q/m:

- particle 3 has the smallest q/m = 1/4 ⋅q0/m0 and, hence, comes the closest

- particle 4 has the largest q/m = 4⋅q0/m0 and, hence, comes the last in ranking

- particles 1 and 2 have equal q/m=q0/m0 and, hence, come tie in between particles 3 and 4

Explanation:

Potential energy at the beginning: Ui =Qq/R*k ≈ 0 (particles are far apart)

Kinetic energy at the beginning: KEi = $mv^{2}$ /2

Potential energy at the end: Uf =(Qq/r)*k

Kinetic energy at the beginning: KEf = 0

From energy conservation:

r = 2*Qk/ $v^{2}$ *q/m

Ranking of the closest approach to the gold nucleous comes from q/m:

- particle 3 has the smallest q/m = 1/4 ⋅q0/m0 and, hence, comes the closest

- particle 4 has the largest q/m = 4⋅q0/m0 and, hence, comes the last in ranking

- particles 1 and 2 have equal q/m=q0/m0 and, hence, come tie in between particles 3 and 4

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3 years ago

I NEED HELLLPPP

adell [148]

I think its A , it makes the most sense

3 0

3 years ago

Read 2 more answers

Which statement would most likely be found in an advertisement from a <br> cell phone provider

ki77a [65]

Answer:B

Explanation:

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4 years ago

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attashe74 [19]

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3 years ago