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slega [8]
3 years ago
11

Removing an electron from a neutral atom will result in an atom that?

Physics
2 answers:
Alex73 [517]3 years ago
8 0

Removing an electron from a neutral atom will result in an atom that is positive.

son4ous [18]3 years ago
7 0

Answer:

give me brainllest if this is right.

Explanation:

No, the atom will get a positive charge.

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Why do conductors transfer heat faster than insulators?
Nesterboy [21]

Answer:

Conduction is usually faster in certain solids and liquids than in gases. Materials that are good conductors of thermal energy are called thermal conductors. Metals are especially good thermal conductors because they have freely moving electrons that can transfer thermal energy quickly and easily.

Heat transfer by convection happens through the air, and there are millions of minuscule air spaces between the fibers. Heat transfer by radiation is also slow since one fiber must radiate its heat to another.

When we give heat then kinetic energy is increase and this heat is transferred from hot metal to cold metal through this free electrons. As in insulator the free electrons are negligible so that the heat is not transferred from hot junction to cold junction due to absence of this free electrons.

Explanation:

maek me as brainliest

3 0
2 years ago
Read 2 more answers
Which statement is NOT true about voltage?
Tom [10]

The first two choices are both false, but the <em>second one</em> is the falser one.

All electricity sources do <em>not</em> have the same voltage. The outlet in your bedroom wall supplies 120 volts, but the USB port on your laptop only supplies 5 volts, and the battery in your cellphone only supplies 3.7 volts.

8 0
3 years ago
A narrow beam of white light is incident on a sheet of quartz. Thebeam disperses in the quartz, with red light (λË700nm)traveli
uysha [10]

Answer:

The index of refraction of quartz for violet light is 1.47.

Explanation:

It is given that, a narrow beam of white light is incident on a sheet of quartz.

The beam disperses in the quartz, with red light at an angle, \theta_r=26.3^{\circ} wrt to the normal and violet light traveling at an angle of \theta_v=25.7^{\circ}

The index of refraction of quartz for red light is 1.45.

We need to find the index of refraction of quartz for violet light.

Using Snell's law of red light as follows :

\mu_a\sin\theta_i=\mu_r\sin\theta_r

Here,

\mu_a is the refractive index of air

\theta_i is the angle of incidence

We can find the value of angle of incidence as follows :

\sin\theta_i=\dfrac{\mu_r \sin\theta_r}{\mu_a}\\\\\sin\theta_i=\dfrac{1.45\times  \sin(26.3)}{1}\\\\\theta_i=\sin^{-1}(0.642)\\\\\theta_i=39.79^{\circ}

Now again using Snell's law for violet light as follows :

\mu_a\sin\theta_i=\mu_v\sin\theta_v\\\\\mu_v=\dfrac{\mu_a\sin\theta_i}{\sin\theta_v}\\\\\mu_v=\dfrac{1\times \sin(39.79)}{\sin(25.7)}\\\\\mu_v=1.47

So, the index of refraction of quartz for violet light is 1.47.

6 0
4 years ago
9. A bicycle tire is spinning clockwise at 3.80 rad/s. During a time period of t = 2.35 s, the tire is stopped and spun in the o
Dima020 [189]

Answer:

option E

Explanation:

given,

angular speed of bicycle tire ()= 3.80 rad/s

time period = 2.35 s

tire stops and spun in opposite direction with angular velocity =  3.80 rad/s

average angular acceleration

initial angular speed = ω₀ = - 3.80 rad/s

final angular speed = ω₁ = 3.80 rad/s

change in angular velocity

\Delta \omega = \omega - \omega_0

\Delta \omega = 3.80 - (-3.80)

\Delta \omega = 7.6\ rad/s

average angular acceleration

\alpha = \dfrac{\Delta \omega}{t}

\alpha = \dfrac{7.6}{2.35}

\alpha = 3.23\ rad/s^2

approximately equal to 3.4 rad/s²

the correct answer is option E

4 0
3 years ago
You push a shopping cart filled with groceries (total mass = 20 kg) by applying a force to the cart 30° from the horizontal. If
makkiz [27]

Answer:

3.72 m/s²

Explanation:

Horizontal component of the force applied = Fcosθ = 86 cos 30 = 74.478 N

Force = mass × acceleration = 74.478 N

ma = 74.478 N

a = 74.478 / 20 since friction can be neglected = 3.72 m/s²

4 0
4 years ago
Read 2 more answers
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