All categories

4 years ago

Which of the following is a mixture? steel water oxygen gold

Physics

2 answers:

Igoryamba4 years ago

8 0

Steel it is an alloy and contains multiple elements

Vladimir79 [104]4 years ago

4 0

A mixture is the combination of two or more substances. Steel is Iron with Carbon, making it an alloy, which is a mixture, meaning it is not an element on the periodic table.
To prove this statement, all of the following answers except steel are on the periodic table; Hydrogen (H), Oxygen (O), and Gold (Au).
I hope this helps!

You might be interested in

A loop of wire is in a magnetic field such that its axis is parallel with the field direction. Which of the following would resu

iren2701 [21]

Answer:

All the 4 options

Explanation:

Electromagnetic induction occurs when the magnetic flux through a coil of wire is changing over time:

$\epsilon = -\frac{\Delta \Phi}{\Delta t}$

where

$\epsilon$ is the emf induced in the coil

$\Delta \Phi$ is the variation of magnetic flux

$\Delta t$ is the variation of time

The presence of an emf in the coil will generated an induced current.

The magnetic flux through the coil is given by

$\Phi = BA cos \theta$

where

B is the intensity of the magnetic field

A is the area of the coil

$\theta$ is the angle between the direction of the field and the axis of the coil

We see that any actions that changes one of these 3 variables will change the magnetic flux through the coil, so it will also induce a current.

The 4 options are:

1.Moving the loop outside of the magnetic field region. --> this will decrease the intensity of the magnetic field, B, therefore it will change the flux, and it will induce a current

2.Spin the loop such that its axis does not consistently line up with the magnetic field direction. --> this will change the angle between the direction of the coil's axis and the field B, so this will also change the flux, and therefore will induce a current

3.Change the magnitude of the magnetic field. --> this will change the magnitude of B, so this will also change the flux, and therefore will induce a current

4.Change the diameter of the loop --> this will change the area of the coil A, so this will also change the flux, and therefore will induce a current

Therefore, all 4 options are correct.

6 0

3 years ago

Two rams run toward each other. One ram has a mass of 44 kg and runs south with a speed of 6 m/s, while the other has a mass of

gladu [14]

Answer = D. 114 kg-m/s north

3 0

3 years ago

When light falls on objects, it interacts with them in different ways as shown in the images. What type of interaction is seen i

ra1l [238]

Total absorption of the light takes place in every image. There is no light left to proceed to our eyes, and that's why we can't see any of the images.

The absorption is so complete in each and every case, we can't even see enough to know how MANY images there are.

4 0

3 years ago

You are standing 10 meters from a light source. Then, you back away from the light source until you are 20 meters away from it.

aliya0001 [1]

From my new perspective, the new intensity of the
light source has decreased by a factor of four.

7 0

3 years ago

Read 2 more answers

Two charged particles are a distance of 1.82 m from each other. One of the particles has a charge of 7.52 nC, and the other has

elena55 [62]

Answer:

(a) $F=9.10*10^{-8}N$

(b) The force is repulsive

Explanation:

a) According to Coulomb's law, the magnitude of the electrice force that one particle exerts on the other is defined as:

$F=\frac{kq_1q_2}{d^2}$

Here k is the coulomb constant, $q_1$ and $q_2$ are the signed magnitudes of the charges and d is the distance between them.

$F=\frac{8.99*10^{9}\frac{N\cdot m^2}{C^2}(7.52*10^{-9}C)(4.46*10^{-9}C)}{(1.82m)^2}\\F=9.10*10^{-8}N$

b) According to Coulomb's law, if the two charges have the same sign, the electrostatic force between them is repulsive.

5 0

4 years ago