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nikitadnepr [17]

2 years ago

14

Atoms seldom exist as independent particles in nature because...

1 answer:

ExtremeBDS [4]2 years ago

3 0

<h3><u>Answer;</u></h3>

C) atoms are more stable when they combine with other atoms

<h3><u>Explanation</u>;</h3>

Atoms are the smallest particles of an element that can take part in a chemical reaction.
<em><u>Atoms seldom exist as independent particles in nature. Nearly all substances are made up of combinations of atoms that are held together by chemical bonds, which are forces of attractions between the nuclei and valence electrons of different atoms that join the atoms together.</u></em>

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You place a point charge q = -4.00 nC a distance of 9.00 cm from an infinitely long, thin wire that has linear charge density 3.

valentinak56 [21]

Answer:

$F=6\times 10^{-7}\ N$

Explanation:

Given:

quantity of point charge, $q=-4\times 10^{-9}\ C$

radial distance from the linear charge, $r=0.09\ m$

linear charge density, $\lambda=3\times 10^{-9}\ C.m^{-1}$

<u>We know that the electric field by the linear charge is given as:</u>

$E=\frac{\lambda}{2\pi.\epsilon_0.r}$

$E=\frac{1}{2}\times 9\times 10^9\times \frac{3\times10^{-9}}{0.09}$

$E=150\ N.C^{-1}$

<u>Now the force on the given charge can be given as:</u>

$F=E.q$

$F=150\times 4\times 10^{-9}$

$F=6\times 10^{-7}\ N$

3 0

3 years ago

A train is travelling towards the station on a straight track. It is a certain distance from the station when the engineer appli

AleksandrR [38]

Answer:

500 m

Explanation:

t = Time taken

u = Initial velocity = 50 m/s

v = Final velocity = 0

s = Displacement

a = Acceleration = -2.5 m/s²

Equation of motion

$v=u+at\\\Rightarrow 0=50-2.5\times t\\\Rightarrow \frac{-50}{-2.5}=t\\\Rightarrow t=20\ s$

Time taken by the train to stop is 20 seconds

$s=ut+\frac{1}{2}at^2\\\Rightarrow s=50\times 20+\frac{1}{2}\times -2.5\times 20^2\\\Rightarrow s=500\ m$

∴ The engineer applied the brakes 500 m from the station

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2 years ago

This is my question. I need the answer stat.

Kipish [7]

Answer:

Explanatioyour answers look right, but if there has , has to be another answer its a , but your answers are right

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A car traveling with constant speed travels 150 km in 7200s. What is the speed of the car?

LiRa [457]

Speed= distance/time
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2 years ago

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gtnhenbr [62]

What are the following statements? If there's one that mention a description of current action, or motion, that's your answer.

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2 years ago