Ask question

Ask question

All categories

notsponge [240]

2 years ago

5

Is the following sentence true or false? Dissolving by ionization is a physical change.

1 answer:

zhannawk [14.2K]2 years ago

5 0

Answer:

False, it is chemical change

Explanation:

sorry it this is wrong

You might be interested in

Explain why it may make more sense to colonize on Venus, rather than Mars.

SVEN [57.7K]

Venus is closer, relatively the same size as the earth and has an atmosphere

6 0

3 years ago

Read 2 more answers

Think about decorative strings of lights that you might see displayed for a holiday. If the lights are on a series circuit, what

USPshnik [31]

That bulb will break insise

7 0

4 years ago

What pattern is seen on the moon from earth?

igomit [66]

If you mean pattern designs it’s rocky bumpy and you can see the circle patterns

If you mean phases the here’s a picture

7 0

3 years ago

A metal has a strength of 414 MPa at its elastic limit and the strain at that point is 0.002. Assume the test specimen is 12.8-m

ser-zykov [4K]

To solve this problem, we will start by defining each of the variables given and proceed to find the modulus of elasticity of the object. We will calculate the deformation per unit of elastic volume and finally we will calculate the net energy of the system. Let's start defining the variables

Yield Strength of the metal specimen

$S_{el} = 414Mpa$

Yield Strain of the Specimen

$\epsilon_{el} = 0.002$

Diameter of the test-specimen

$d_0 = 12.8mm$

Gage length of the Specimen

$L_0 = 50mm$

Modulus of elasticity

$E = \frac{S_{el}}{\epsilon_{el}}$

$E = \frac{414Mpa}{0.002}$

$E = 207Gpa$

Strain energy per unit volume at the elastic limit is

$U'_{el} = \frac{1}{2} S_{el} \cdot \epsilon_{el}$

$U'_{el} = \frac{1}{2} (414)(0.002)$

$U'_{el} = 414kN\cdot m/m^3$

Considering that the net strain energy of the sample is

$U_{el} = U_{el}' \cdot (\text{Volume of sample})$

$U_{el} = U_{el}'(\frac{\pi d_0^2}{4})(L_0)$

$U_{el} = (414)(\frac{\pi*0.0128^2}{4}) (50*10^{-3})$

$U_{el} = 2.663N\cdot m$

Therefore the net strain energy of the sample is $2.663N\codt m$

6 0

3 years ago

Sound travels 2146 m through a material in 1.4 seconds. What is the material?

Sonbull [250]

Your basically breaking the sound beerier <span />

5 0

3 years ago