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irina [24]
3 years ago
11

Which statements accurately describe elements?

Physics
2 answers:
alexandr402 [8]3 years ago
8 0

Elements are made up of two or more types of atoms.

Elements are made up of only one type of atom.

Each element has a unique chemical symbol.

Þ Elements can be identified by their àtomid number. I

One element cannot be combined with another elemen

Explanation:

Marysya12 [62]3 years ago
6 0

The statements that describes accurately about elements are :

Elements are made up of only one type of atom.

Each element has a unique chemical symbol.

Elements can be identified by their àtomic number

<u>Explanation:</u>

Simple and complete chemical substances are called elements. An element contains only one type of atom. In a periodic table each of the the element occupies unique entry respectively. The atom that is present in an element contains similar number of protons and this is said to be an atomic number. Each element is represented by an unique one or two letters in the periodic table.

One Element differs for another element by the number of protons present in the nucleus. If there is one proton in an atom it is said to be hydrogen atom and if it has two atoms then it is known to be a helium atom.Lithium refers to the atom with three protons.

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tatuchka [14]

Answer:

Honestly, you should have a firm resolve not to go into drug peddling.

Politely tell him you are not interested in the business, that you are most concerned about your future and the career path you have chosen for yourself already.

He will definitely feel bad, but you can go on to advise him.

You can also advise him to stop and highlight the dangers of doing drugs.

Explanation:

There are a whole lot of disadvantages involved in the drug business,

in fact, the disadvantages out weights the advantages in the long run.

say if one is caught and sent to a life long sentence, or if one is caught up with the effect of the use of hard drugs and the health implication, to the extent that one looses his/her sanity, you see it won't make any sense anymore doing drugs in the long run. so friend you can advise you cousin to stop and thinker of good businesses that cold fetch him cool money, without the law chasing him, with that he can be a contributor to economic growth by paying his taxes too

3 0
3 years ago
An airplane flies in a horizontal circle of radius 500 m at a speed of 150 m/s. If the radius were changed to 1000 m, but the sp
laila [671]

Answer:

The centripetal acceleration changed by a factor of 0.5

Explanation:

Given;

first radius of the horizontal circle, r₁ = 500 m

speed of the airplane, v = 150 m/s

second radius of the airplane, r₂ = 1000 m

Centripetal acceleration is given as;

a = \frac{v^2}{r}

At constant speed, we will have;

v^2 =ar\\\\v = \sqrt{ar}\\\\at \ constant\ v;\\\sqrt{a_1r_1} = \sqrt{a_2r_2}\\\\a_1r_1 = a_2r_2\\\\a_2 = \frac{a_1r_1}{r_2} \\\\a_2 = \frac{a_1*500}{1000}\\\\a_2 = \frac{a_1}{2} \\\\a_2 = \frac{1}{2} a_1

a₂ = 0.5a₁

Therefore, the centripetal acceleration changed by a factor of 0.5

7 0
3 years ago
A skateboarder wants to cross a large playground and notices that there are large shapes painted on its asphalt surface. One sha
Elden [556K]
<h2>Diagonal of circle </h2>

Explanation:

As the skateboarder wants to cross the play ground . The surface is rough .

As we know , the force of friction is non-conservative force . Thus work is required against this force .

We have formula:

work done = Force x distance (in one direction )

Te force applied cannot be changed , so he is to decrease the distance .

In case of circle , diameter is the minimum distance . Thus he is supposed to move along it .

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3 years ago
A vehicle travels from a 30m marker to a 100m marker. What is the change in distance?
sesenic [268]
The change in distance is 30 because if you subtract both number you'll get 30
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In which of the fire plume structure zones do the gases accelerate upward?
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