PHYSICS MIDDLE SCHOOL

What is gravitational field intensity?

Answers

Answer 1

Answer:

Answers :

The gravitational field intensity (EG) or (g) is the force on a unit mass at a point in the field.

Since the force (F) on a body of mass m in a gravitational field of a body of mass M = GMm/r2 .

you can see that the force per unit mass is given by F/m. So:

Gravitational Field Intensity (EG) = (g) = F/m = GM/r2

The units for EG are N kg -1 or since F = ma, F/m = a and so EG may be expressed in ms -2

Hope this will help you :))

Do give this answer a brainliest :D

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The pitch of a note corresponds to which property of sound wave

Answers

A high pitch sound corresponds to a high-frequency sound wave and a low pitch sound corresponds to a low-frequency sound wave. So, the pitch of a note corresponds to the amount of frequency of a sound wave. Hope this helped!

What are six forms of energy

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1.Sound Energy- is produced when an object is made to vibrate. Sound energy travels out as waves in all directions. Sound needs a medium to travel through, such as air, water, wood, and even metal!
Examples: Voices, whistles, horns and musical instruments.

2.Chemical Energy - is really a form of potential energy and is the energy stored in food, gasoline or chemical combinations.
Examples: Striking a match, combining vinegar and baking soda to form CO2 Gas, breaking light sticks releases chemical energy.

3.Radiant Energy - is a combination of heat and light energy. Light energy, like sound energy, travels out in all directions in waves.
Examples: A light bulb, the glowing coils on a toaster, the sun, and even headlights on cars.

4.Mechanical Energy - is moving energy. It is the form that we most see around us. All moving objects produce mechanical energy. The movements within machines is also mechanical energy.
Examples: People, a rolling bicycle, moving gears, and running cars.

5.Atomic Energy - is produced when you split atoms. A tremendous amount of energy is released when this happens.
Examples:Atomic bombs, nuclear power plants, nuclear submarines, and the sun.

6.Electrical Energy - Energy produced by electrons moving through a substance is known as electrical energy. We mostly see electric energy in batteries and from the outlets in our homes. Electrical energy lights our homes, run motors, and makers our TVs and radios work.
Examples: CD players, TVs and Video games.

Final answer:

The six forms of energy are chemical, thermal, nuclear, electrical, mechanical, and light energy. Each has different characteristics and uses, such as chemical energy being stored in potential changes or light energy being visible to the human eye.

Explanation:

Energy exists in many forms. Here are six common forms of energy:

Chemical Energy: It is the potential of a chemical substance to undergo a transformation through a chemical reaction to transform into other substances.
Thermal Energy: It is the internal energy present in a system due to its temperature.
Nuclear Energy: The energy in the nucleus of an atom. It can be obtained through two methods, namely fission (splitting of atoms) and fusion (joining of atoms).
Electrical Energy: Form of energy caused by the movement of electrons.
Mechanical Energy: It's a sum of potential and kinetic energy. It is associated with the motion and position of an object.
Light Energy: It is a form of energy that is visible to the human eye.

Learn more about Forms of Energy here:

brainly.com/question/5650115

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What portion of the electromagnetic spectrum can human eyes detect? A.
visible light

B.
visible light and infrared light

C.
infrared light

D.
infrared light and ultraviolet light

Answers

Well, there's a very definite reason why a certain sliver of the electromagnetic
spectrum is called "visible".

The meaning of the word 'visible' is 'can be seen with eyes', and that's the label
given to the part of the electromagnetic spectrum that can be seen with eyes.
It doesn't include infrared or ultraviolet radiation, because those cannot be seen
with eyes. Only the 'visible' wavelengths can.

Answer:

visible light

Explanation:

What is the difference between chemical and physical changes

Answers

There are several differences between a physical and chemical change in matter or substances. A physical change in a substance doesn't change what the substance is. In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed.

Which statement describes the relationship between the rate of reaction and the temperature?

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PM me the statements, and i'll answer it then.

If nothing is faster than light, how did the dark get there first?

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say you were in a dark room and you turned on a flashlight ..the darkness was already there to begin with. the flashlight would fill the room with the speed of light.

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