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3 years ago

What happens when an ionic compound is melted?

1 answer:

7 0

It conducts electricity. This is because the electrons are able to move around more for it has gained energy, after being heated.

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3 years ago

CHEGG You stretch a spring with spring constant k = 1.2x104 N/m to extend 6.0 cm away from its equilibrium position. How much do

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Answer:

The elastic potential energy of the spring change during this process is 21.6 J.

Explanation:

Given that,

Spring constant of the spring, $k=1.2\times 10^4\ N/m$

It extends 6 cm away from its equilibrium position.

We need to find the elastic potential energy of the spring change during this process. The elastic potential energy of the spring is given by the formula as follows :

$E=\dfrac{1}{2}kx^2\\\\E=\dfrac{1}{2}\times 1.2\times 10^4\times (0.06)^2\\\\E=21.6\ J$

So, the elastic potential energy of the spring change during this process is 21.6 J.

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3 years ago

A protester carries his sign of protest, starting from the origin of an xyz coordinate system, with the xy plane horizontal. He

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Answer:

Part A:

$Displacement\ vector= -40\hat i+20\hat j+25\hat k$

Part B:

Magnitude of displacement=44.721359 m

Explanation:

Given Data:

40 m in negative direction of the x axis

20 m perpendicular path to his left (considering +ve y direction)

25 m up a tower (Considering +ve z direction)

Required:

In unit-vector notation, what is the displacement of the sign from start to end.
The magnitude of the displacement of the sign from start to this new end=?

Solution:

Part A:

$Displacement= (0-40)\hat i+(0+20)\hat j+(0+25)\hat k\\Displacement= -40\hat i+20\hat j+25\hat k$

where:

i,j,k are unit vectors

Part B:

Sign falls to foot of tower so z=0

$Displacement= -40\hat i+20\hat j+0\hat k$

Magnitude of displacement:

$Magnitude\ of\ displacement=\sqrt{(-40)^2+(20)^2+0^2} \\Magnitude\ of\ displacement=44.721359\ m$

6 0

3 years ago

What happens when an ionic compound is melted?﻿

What happens when an ionic compound is melted?