All categories

3 years ago

Iron is a 1. Compound 2.an element 3.a mixture

Physics

2 answers:

Tcecarenko [31]3 years ago

8 0

Answer:

Iron is a element

Explanation:

a substance that cannot be broken down into simpler substances by chemical means, and is characterized by its atomic number, , which represents the number of positively charged particles within that element's nucleus

ziro4ka [17]3 years ago

4 0

Answer:

compound

Explanation:

Iron is a mineral that our bodies need for many functions.

You might be interested in

Which of the following is one part of a chemical formula?

a_sh-v [17]

Answer:A

Explanation: number that shows the total atomic mass of the substance

5 0

3 years ago

Read 2 more answers

An auditorium measures 40.0 m 3 20.0 m 3 12.0 m. The density of air is 1.20 kg/m3. What are (a) the volume of the room in cubic

Burka [1]

We use the formula,

m = V\rho

Here, m is the mass, V is the volume and $\rho$ density

Also

$V = l w h$

Here l is length, w is width and h is height.

(a) The volume of the room,

$V=40.0 \ m \times 3 20.0 \ m \times 3 12.0\ m = 3.99 \times 10^{6} m^3$

The volume of the room in cubic feet,

$V = 3.99 \times 10^{6} m^3 \times(\frac{3.281 \ ft}{m} )^3 = 4.3 \times 10^7 \ ft^3$

(b) Now the mass of the air in room,

$m= (3.99 \times 10^{6} \ m^3) (1.20 \ kg/m^3) = 4.8 \times 10^6 kg$ .

Therefore, the weight of the air in room,

$W = mg= 4.8 \times 10^6 kg \times 9.8 m/s^2 = 46.9 \times 10^6 \ N \\\\ W = 4.69 \times 10^7 \ N$ .

The weight of air in the room in pounds,

$W = 4.69 \times 10^7 \ N ( \frac{1 \ lb}{4.448 \ N} ) = 1.1 \times 10^7 \ lb$

3 0

3 years ago

Sceiene question please show work for brainliest :)

Ad libitum [116K]

The answer to this questions would be nuclear engineer. The overall career of engineering would require physics as engineers need to know how the overall mechanics of nature affect the way their structure is built.

Hope this helped :D

5 0

4 years ago

The heating and cooling of molecules will make ____________________ change their state of matter.

Lapatulllka [165]

Answer:

energy

Explanation:

The heating and cooling of molecule will make energy change their state of matter.

7 0

3 years ago

Suppose a truck has a momentum of 40,120 kg • and a mass of 1,180 kg. What is the truck’s velocity?

gladu [14]

Answer:

The velocity of the truck is 34 m/s.

Explanation:

The momentum (p) of an object is the product of its mass (m) and its velocity (v) which can be written as:

p = mv

Here in this problem, we are given a truck which has a momentum of 40120 kg and a mass of 1180 kg and we are to find its velocity.

So substituting the given values in the above formula to find the velocity of the truck.

Truck's velocity = $\frac{40120}{1180}$ = 34 m/s.

3 0

3 years ago