3 years ago

Which of the following provides the best analogy for an electron in an atomic orbital?

Physics

2 answers:

beks73 [17]3 years ago

8 0

C i think because its the most probable answer. None of ure answer choices describe the following.

Elden [556K]3 years ago

7 0

A. cow grazing in pasture.

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How does the law of conservation of mass apply to this reaction: Al + 3HCl → H2 + AlCl3 ?

11Alexandr11 [23.1K]

Answer:

Only the hydrogen needs to be balanced. There are equal numbers of aluminum and chlorine.

Explanation:

I took the K12 test, listened to some other idiot and got it wrong, so this is the correct one.

Hope this helps!

8 0

3 years ago

Read 2 more answers

A skater has rotational inertia 4.2 kg.m2 with his fists held to his chest and 5.7 kg.m2 with his arms outstretched. The skater

Fynjy0 [20]

Answer:

6.13428 rev/s

Explanation:

$I_f$ = Final moment of inertia = 4.2 kgm²

I = Moment of inertia with fists close to chest = 5.7 kgm²

$\omega_i$ = Initial angular speed = 3 rev/s

$\omega_f$ = Final angular speed

r = Radius = 76 cm

m = Mass = 2.5 kg

Moment of inertia of the skater is given by

$I_i=I+2mr^2$

In this system the angular momentum is conserved

$L_f=L_i\\\Rightarrow I_f\omega_f=I_i\omega_i\\\Rightarrow \omega_f=\dfrac{I_i\omega_i}{I_f}\\\Rightarrow \omega_f=\dfrac{(5.7+2\times 2.5\times 0.76^2)3}{4.2}\\\Rightarrow \omega_f=6.13428\ rev/s$

The rotational speed will be 6.13428 rev/s

5 0

3 years ago

TRUE OR FALSE. if an object does not change its position at a given time interval, then it is at rest or its speed is zero or no

Andrew [12]

Answer:

true

Explanation:

a body can only be accelerating and have speed if it's in motion

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D. When Alan's puck is moving at 21 m/s south, it collides

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D is s s s s s ss s s s s

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Describe the motion of a person who is standing on the earths surface

oee [108]

They are rotating because the earth never stops rotating.

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2 years ago