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trapecia [35]
3 years ago
12

What is meant by free electrons?

Physics
1 answer:
muminat3 years ago
7 0

Electron as a free particle

Explanation:

Free electrons,the electrons which are not attached to the nucleus of a atom and free to move

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A 3000 kg deck is cantilevered over a beam as shown. It is attached to the house at the other end. Find the force of the beam.
Afina-wow [57]
The beam is acting as the pivot and the weight of the deck acts through its center its gravity, at the midpoint of the deck. 
Center of gravity at: (16 + 4)/2 = 10 ft

Converting 4 ft to meters: 1.22 m
Converting 10 ft to meters: 3.05

F x 1.22 = 3.05 x 3000 x 9.81
F = 73,600 N
4 0
4 years ago
Electrons in excited hydrogen atoms are in the
Sidana [21]
I can see three different transitions here:

3 --> 1

3 --> 2
followed by
2 --> 1 .

So we should expect to see three different 'colors'
being emitted from this excited mob.
4 0
3 years ago
A rock thrown with speed 7.50 m/s and launch angle 30.0 ∘ (above the horizontal) travels a horizontal distance of d = 18.0 m bef
Iteru [2.4K]

Answer:

height from where rock was thrown is 27.916 m

Explanation:

speed = 7.50 m/s

θ = 30°

g= 9.8 m/s²

horizontal distance = 18 m

time require for vertical displacement

time = \frac{distance}{velocity} \\t = \frac{18}{7.5\ cos30^0}

t = 2.8 sec

now for calculation of height

s = ut + 0.5 a t²

-h = v sinθ× t + 0.5 ×(-9.8)× (2.8²)

-h = 7.5 sin30°× 2.8 - 0.5 ×(9.8)× (2.8²)

-h = -27.916 m

h= 27.916 m

height from where rock was thrown is 27.916 m

5 0
3 years ago
EASY QUESTION FOR HIGH SCHOOL TEENS SUPER EASY
adelina 88 [10]
It’s true i hope everyone has a great day
3 0
3 years ago
Read 2 more answers
A ball is hung from a rope, making a pendulum. When it is pulled 5° to the side, the restoring force is 1.0 N. What will be the
Trava [24]

Answer:

restoring force is 2 N

Explanation:

given data

angle pulled = 5°

force = 1 N

pulled = 10°

to find out

restoring force

solution

we know here force

force = m×g×sinθ     ..........1

so here θ is very small so sinθ  = θ

1 = mg(5)

mg = 1 /5     ..................2

and

now for 10 degree

we know here θ is small so sinθ  = θ

so from equation 1

force = m×g×sinθ

put equation 2 here

force = 1/5 × 10  

force = 2 N

so restoring force is 2 N

7 0
3 years ago
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