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Citrus2011 [14]
3 years ago
13

What is a free electron? Can someone help?

Physics
1 answer:
Aleksandr [31]3 years ago
3 0
A free electron is one which has become detached from a covalent bond between two atoms and is able to move around from atom to atom and possibly take part in electric current flow.
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A 5 .0kg cart is moving horizontaly at 6 .0m/s in order to change its speed to 10m/s the net work done on the cart must be
ahrayia [7]

Answer:

the net work done on the cart is 160 J.

Explanation:

Given;

mass of the cart, m = 5.0 kg

initial velocity of the cart, u = 6 m/s

final velocity of the cart, v = 10 m/s

The net work done on the cart is equal to change in average kinetic energy of the cart;

W = K.E = \frac{1}{2} m(v^2-u^2)\\\\W = \frac{1}{2} \times 5(10^2-6^2)\\\\W = 160 \ J

Therefore, the net work done on the cart is 160 J.

8 0
3 years ago
A snail con move at 3cm/s if it’s ke is 300joules what it it’s mass?
ch4aika [34]

Answer:

Explanation:  V = 3 cm/s = 0.03 m/s

                  BY THE FORmULA OF  K.E

                      K.E = 1/2 mV^2

                     300 =1/2 m (0.03)^2

                     m = 300 x 2/0.0009

                       m= 666666.66kg

4 0
2 years ago
Two spheres of equal mass, A and B, are projected off the edge of a 1.0 m bench.    Sphere A has a horizontal velocity of 10 m/s
suter [353]

Answer:

c. because A will land first becuase its heavier

and D.

Explanation:

4 0
3 years ago
What would be the mass of a sample containing 0.7 mol of pure tungsten?. . 0.04 g. . 51.8 g. . 128.7 g. . 262.6 g.
mojhsa [17]
There are several information's of immense importance already given in the question. The answer to the question can be easily determined using those available information's. 

Mr of pure tungsten = 183.84
Mass of tungsten = Mole * Mr
                             = 0.7 * 183.84
                             = 128.7 gm
From the above deduction, it can be concluded that the correct option among all the options that are given in the question is the third option or the penultimate option.
4 0
3 years ago
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Describe ALL of the energy transformations that are taking place in this process.
Nikitich [7]

Answer:I think that is false

Explanation:

6 0
3 years ago
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