PHYSICS HIGH SCHOOL

What characteristics makes a substance a mineral?A. It is hard
B. It is organic
C. Its structure is crystal
D. Its a liquid, solid, or gas

Answers

Answer 1

Answer:

Answer:c-its structure is crystal

Explanation:

A substance is called a mineral if it meets the following requirement

naturally occurring,

inorganic,

solid,

definite chemical composition,

ordered internal structure

So the definite answer is crystal structure because they have an ordered internal structure.

Hope it helps

Answer 2

Answer:

Final answer:

A mineral is a naturally occurring, inorganic, solid substance with a specific chemical composition and a crystalline structure. Hardness may vary among minerals and they are not organic. They are solid under normal conditions on Earth.

Explanation:

A mineral is defined by several specific characteristics: it is naturally occurring, inorganic, solid, has a definite chemical composition, and has a ordered internal arrangement of atoms - structure typically crystalline in nature.

It is hard: Not all minerals are hard. The hardness of a mineral is determined by the Mohs scale. So, hardness is a characteristic but not a definition.
It is organic: This statement is untrue. Minerals are inorganic substances.
Its structure is crystal: This is true. Minerals have a crystalline structure due to the orderly, repeating pattern of their atoms.
It's a liquid, solid, or gas: This is partly correct. Minerals are solids under normal conditions on Earth.

Learn more about Mineral here:

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What is the only force acting on an object orbiting Earth?A. air resistance
B. friction
C. inertia
D. gravity

Answers

The correct answer to the question is D). Gravity.

EXPLANATION:

Before coming into any conclusion, first we have to understand centripetal force.

Centripetal force is the force which is required to keep a body moving in a circular path. This force always acts along the radius and towards the centre.

As per the question, the object is moving around the earth. As it is moving in a orbit, it needs a centripetal force which will help the object stick to the orbit.

The centripetal force required is provided to the object by the gravitational force of earth .

Air resistance and friction play no role in imparting centripetal force to the object.

Hence, the correct option of this question is gravity, which is the only force that acts on an object orbiting earth.

im pretty sure its gravity

PLEASE HELP. A substance decays according the the equation ae^-0.0025t, where t is in minutes. Find the half life of the substance. Round to the nearest tenth.

Answers

First of all, that's not an equation. An equation needs an 'equals' sign ( = ),
so you need something like

   Amount present = a e^-0.0025t .

   'a' = amount present when t = 0 .

The half-life is the time it takes for the original amount to decay to half of it.

That's just 't' when       e^-0.0025t = 1/2

Take the natural log of each side: -0.0025t = ln(0.5)

Divide each side by -0.0025 : t = ln(0.5) / (-0.0025) =

   (-0.69315) / (-0.0025) =

   t = 277.26 minutes

( 4hrs 37min 15.5sec)

Rounded to nearest tenth: t = 277.3 minutes .

Which of the following universal forces is the weakest? A. electric
B. gravitational
C. strong nuclear

Answers

The universal force that is the weakest is gravitational. The correct answer is B.

Unit 1 lesson 8

1.B) gravitational

2.A) centripetal force

3.C) gravitational force

4. Inertia

5. Force, mass

6. Bowling

100%!!

The pressure of a gas will increase as the volume of the container decreases, provided temperature does not change. This statement is called _____. Boyle's law Charles's law Archimedes' principle Pressure laws

Answers

The right answer for the question that is being asked and shown above is that: "Archimedes' principle." The pressure of a gas will increase as the volume of the container decreases, provided temperature does not change. This statement is called Archimedes' principle

112444811Explanation:

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What force keeps a water spider on the surface of water

Answers

i think it's surface tension force

The work done by stretching a certain spring increases by 0.13x joules per centimeter (where x is the displacement, in centimeters, beyond the spring's natural length). How much work (in Joules) must be done in order to stretch the spring from x?