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2 years ago

The chart lists four different kinds of atoms.

1 answer:

3 0

They cannot be divided and still keep the properties of the element true about all of these atoms. Option D is corect.

The atom consists of matter that may be split without releasing electrical charges.

It's also the smallest unit of matter with chemical element features. As a result, the atom is the fundamental unit of science.

In the nucleus proton and the neutron is exists. The condition of the atom to be electrically neutral is that the number of the proton and electron should be the same.

They cannot be separated while still maintaining the element's characteristics for each and every one of these atoms.

Hence, option D is corect.

To learn more about the atom refer to the link;

brainly.com/question/1566330

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Calculate the value of the diffusion coefficient D (in m2/s) at 567°C for the diffusion of some species in a metal; assume that

timofeeve [1]

Explanation:

Below is an attachment containing the solution.

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3 years ago

A ball is thrown horizontally from the top of a building and strikes the sidewalk after 2.8 s. How tall is the building? Neglect

Brut [27]

Answer:

h = 38.41 m

Explanation:

Given that,

A ball is thrown horizontally from the top of a building and strikes the sidewalk after 2.8 s.

We need to find the height of the building. Let it is h.

Initial speed of the ball, u = 0

Using second equation of motion to find h as follows :

$h=ut+\dfrac{1}{2}at^2\\\\\text{Put u = 0 and a = g}\\\\h=\dfrac{1}{2}gt^2\\\\=\dfrac{1}{2}\times 9.8\times 2.8^2\\\\=38.41\ m$

So, the building is 38.41 m tall.

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3 years ago

A 4-79 permalloy solenoid coil needs to produce a minimum inductance of 1.1 . If the maximum allowed current is 4 , how many tur

daser333 [38]

The related concept to solve this exercise is given in the expressions that the magnetic field has both as a function of the number of loops, current and length, as well as inductance and permeability. The first expression could be given as,

The magnetic field H is given as,

$H = \frac{nI}{l}$

Here,

n = Number of turns of the coil

I = Current that flows in the coil

l = Length of the coil

From the above equation, the number of turns of the coil is,

$n = \frac{Hl}{I}$

The magnetic field is again given by,

$H = \frac{B}{\mu_t}$

Where the minimum inductance produced by the solenoid coil is B.

We have to obtain n, that

$n = \dfrac{\frac{B}{\mu_t}l}{I}$

Replacing with our values we have that,

$n = \dfrac{\frac{1.1Wb/m^2 }{200000}(2m)}{4mA}$

$n = \dfrac{(\frac{1.1Wb/m^2 }{200000})(\frac{10^4 guass}{1Wb/m^2})(2m)}{4mA(\frac{10^{-3}A}{1mA})}$

$n = 27.5 \approx 28$

Therefore the number of turn required is 28Truns

4 0

4 years ago

At time t = 0 s, an object is observed at x = 0 m; and its position along the x-axis follows this expression: x = –4t + t2, wher

Anit [1.1K]

Answer:

The object displacement is 0 meters.

Explanation:

Because the expression for the object position as function of time is:

$x(t)= -4t + t^2$

At t= 3.0=t2 seconds the x-position of the object is:

$x(3.0)= -4(3.0) + (3.0)^2$

$x(3.0s)=-3 m$

and at t=1.0=t1 seconds the x-position of the objects is:

$x(1.0)= -4(1.0) + (1.0)^2$

$x(1.0s)=-3m$

The total displacement ( $\Delta x$ ) of the object between t2 and t1 is the difference between x(3.0s) and x(1.0s):

$\Delta x= x(3.0)-x(1.0)=-3.0-(-3.0)$

$\Delta x=0m$

The displacement of the object is zero!!!

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3 years ago

What's photosynthesis?

lbvjy [14]

Answer:

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities.

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3 years ago

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