All categories

4 years ago

What items can be classified as matter?

Physics

1 answer:

Agata [3.3K]4 years ago

7 0

Gas , Liquid , or solid

You might be interested in

A 1000-n weight is hanging from a 2.0 m long aluminum rod. A 500-n weight is hanging from a 1.0 m long aluminum rod. The two alu

Hunter-Best [27]

Answer:

Both rod have the same tensile stress

Explanation:

Given information,

The weight first rod, $W_{1}$ = 1000 N

The length of first rod, $l_{1}$ = 2.0 m

The weight second rod, $W_{2}$ = 500 N

The length of second rod, $l_{2$ = 1.0 m

The equation of tensile stress, σ = $\frac{F}{A}$

where

σ = tensile stress (N/ $m^{2}$ or Pa)

F = Force (N)

A = Area (N/ $m^{2}$ or Pa)

σ1 = $\frac{W_{1} }{A_{1} }$ , A = 2πl

= $\frac{1000}{2\pi(2) }$

= $\frac{250}{\pi }$ N/ $m^{2}$

now calculate σ2

σ2 = $\frac{W_{2} }{A_{2} }$

= $\frac{500}{2\pi(1) }$

= $\frac{250}{\pi }$ N/ $m^{2}$

σ1/σ2 = $\frac{250}{\pi }$ / $\frac{250}{\pi }$

σ1/σ2 = 1

σ1 = σ2

Hence, the tensile stress of first and second rod are the same.

5 0

4 years ago

In an a.c generator, there are rings used. What are there names and how are they adapted to reversing current.

djyliett [7]

Answer:

In an a.c generator, slip rings are used.

Adaptation: They are not directly connected directly to carbon brushes, hence donot come into contact when the rectangular coil rotates.

Explanation:

$.$

6 0

3 years ago

Read 2 more answers

The setting sun is actually visible after it has dropped below the horizon due to the bending of light waves entering the atmosp

Yuki888 [10]

That's one result of "refraction".

4 0

3 years ago

Read 2 more answers

Pls help me I want to get this done

Simora [160]

K:potassium
Cu:copper
Cl: chlorine

8 0

3 years ago

Why is it necessary for cells to be so small

madreJ [45]

Answer:

Cells are small because they need to keep a surface area to volume ratio that allows for adequate intake of nutrients while being able to excrete the cells waste.

Explanation:

That is why the cell needs to be small

8 0

3 years ago