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MSU / Physical Science / PHSC 1013 / What happens to kinetic energy when an object slows down?

# What happens to kinetic energy when an object slows down? Description

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Final Exam Study Guide

## What happens to kinetic energy when an object slows down? Professor: Florin Lung

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Test 1

● Weight is not considered a fundamental property

● Scientific thinking mean analyzing the situation, accepting  experimental results, and questioning the authority of other

scientists

● The velocity of a falling object is constantly increasing (ignoring  air resistance)

Formulas

● p=m/v

● m=pv

● d=vt

● t=d/v

● w=mg

● a=f/m

Test 2

● Energy is conserved when a moving object slows to a stop ● The same amount of work is done when one walk up stairs and

## Is fahrenheit or celsius more accurate? runs up stairs

● The fahrenheit thermometer scale is equally accurate as the

celsius

● Freezing point of water is 273 K

Formulas

● w=fd

● ke= 1/2mv ^2

● M=mv

Test 3

Chapter 5:

● Frequency is NOT the time required for one complete cycle.

-Frequency is amount of vibrations that are completed in one  second

-Unit: Hertz (Hz)

● Sounds that move through air are NOT transverse waves. ● Only pressure waves or longitudinal waves can travel through

## Do longitudinal waves have compression? Don't forget about the age old question of What are the colors of the clouds?

gases.

● Transverse mechanical waves can only move through solids. ● Longitudinal waves can move through gases, solids, and liquids. ● Sound does NOT travel faster through cold, denser air than

through warm, less dense air.

● Sound waves travel faster in warm air compared to cool air, solids

compared to liquids, and liquids compared to gases.

● When you increase the energy that goes into starting a vibration,

the amplitude increases

● A period is the time required for one cycle of any repeating event  ● Longitudinal waves are particles of a material that move back

and forth in the same direction of the wave

● Transverse waves are particles of a material that move up and

down perpendicular to the direction of the wave

● The greater the frequency, the higher the pitch will be. ● Both constructive and destructive sound interference is  We also discuss several other topics like Isaac had two sons; who are they?

necessary to produce beats.

● A resonance takes place at a natural frequency and is an efficient

transfer of energy

● Frequency is the number of cycles that a vibrating object moves

through during a time interval of 1 second.

● The frequency of the wave is what is interpreted as pitch. ● The period of a vibrating object is inversely proportional to the

frequency

● A wave travels and carries energy.

● An echo and a reverberation is different based on the time  interval between the sound reflected and the original sound

________________________________________________________________________ _____________

Chapter 6: Electricity

● The electrical force is NOT much weaker than the force of gravity. If you want to learn more check out It is when the price of a good changes ceteris paribus, we move along the supply curve. what is it?

● An object gaining protons does NOT cause it to become  positively charged.

● An object becomes positive by gaining an excess of electrons.

● Doubling the distance between two charged objects will reduce  the electrical force by a factor of four.

● A magnetic field is produced around a wire by a charge moving  through the wire. We also discuss several other topics like What is the pathogen in pulmonary?

● The attractive force between two unlike charges and the  repulsive force between two like charges have the same strength.

● Chemical, light, and electrical phenomena involve movement or  interactions in the electrons of the atom.

● An object becomes electrostatically charged after the transfer of  electrons.

● A unit of electrical charge is called a coulomb.

● A unit of electrical potential difference is called a volt. ● A unit of electrical current is called an amp.

● A watt requires a measure of time.

● Work has the unit of kilowatt-hour.

● Amp and watt are measures of rates.

● Ohm’s law states that the potential difference increases if the  current in a circuit increases.

Formulas

Wave Velocity, v=f λ

Speed of sound, v = 331+ 0.6(T)

Beat frequency, fb= f₂-f₁

Harmonic frequency, fn= nv/2L

Charge of an object, q=ne

Single electron = -1.60 x 10^-19 C We also discuss several other topics like How do we guarantee the person we vote for will act as we want?

Single proton = +1.60 x 10^-19 C

q = total charge in coulombs

n = number of extra electrons

e = fundamental charge

Frequency and period are inverse.

T= 1/F ←-------------→ F= 1/T

Voltage, V= W/ q

Ampere, I= q/ t …. 1A= 1C/ 1 sec

Ohm’s Law, V=IR … R= V/ I … I= V/ R

Power, P= IV

Series Resistances, Rtotal= R1 + R2 …

Parallel Resistances, 1/Rtotal= 1/R1 + 1/R2 …

Test 4

Chapter 6 & 7

● Magnetism is produced by the movement of electrical currents. ● If you reverse the direction of a current in a wire, the magnetic  field around the wire will have a reversed north pole direction. ● A step-up transformer steps up the voltage. If you want to learn more check out How to measure color temperature?

● Light interacts with matter through the process of absorption,  reflection, and transmission.

● A prism separates the colors of sunlight into a spectrum due to  each wavelength of light having its own index of refraction. ● Green grass is a reflection green light.

● The polarization behavior of light is best explained by considering light to be transverse waves.

● Max Planck discovered that the energy of vibrating molecules  existed only in multiples of certain fixed amounts when involved  in blackbody radiation.

● Earth’s magnetic field has undergone many reversals in polarity. ● Because a moving charge produces a magnetic field of its own, a  current-carrying wire has a magnetic field around it.

● The current in the secondary coil of a transformer is produced by  a varying magnetic field.

● Dispersion is the separation of white light into its component  colors.

● A pencil appearing bent in a glass of water is an example of  refraction.

● Green grass absorbs all light except green light.

● Interference can only be explained by a wave model of light. ● Higher frequency has more energy.

● A thin wire would have more electrical resistance than a thick  wire with the same material, length, and temperature. ● The electric field that surrounds an electric charge will collapse  inward if the charge suddenly neutralizes.

● The earth’s magnetic north pole is a south magnetic pole. ● The magnetic domains in a permanent magnet are aligned,  giving it magnetic properties.

● The force of attraction between two unlike charges has the same  strength as the force of repulsion between two like charges. ● The electrical force is not weaker than the force of gravity. ● A magnetic field is always produced around the wire by a charge  moving through it.

● A person’s brain’s interpretation of light rays is considered a  virtual image.

● Red light has the lowest frequency and longest wavelength  detected by your eyes.

● Warm air has a higher index of refraction in comparison to cool  air and produces a mirage.

● The changing refraction from the mixing of cool and warm air  produces the ‘shimmering’ that one observes on a heated  surface.

● The color blue has more energy based on the relationship  between energy of light and frequency.

● The photoelectric effect cannot be explained with a wave theory  of light.

● Polarization cannot be explained with a particle theory of light. ● An object that produces light of its own is a luminous object. ● Based on the electromagnetic wave model, when an electrical

charge is accelerated with a magnitude within a given range  visible light is produced.

● After an object is hot enough to produce a dull red glow, it will  produce a shorter-wavelength and higher-frequency radiation if it  is heated more.

● The difference in temperatures is the difference in the light that is produced by the sun, light bulbs, and candles.

● Sunlight is mostly infrared radiation before traveling through the  earth’s atmosphere.

● Because the light has undergone diffuse reflection, it gives one  the ability to see in shaded areas.

● All parts of the electromagnetic spectrum can be measured in the units of wavelength, energy, or frequency.

● Interference can only be explained by a wave model of light. ● Because blue light is scattered more than any other color, the sky appears blue.

● Light today is considered a small-scale phenomenon. ● A full moon is not more luminous than a half moon. ● Incandescent objects are more luminous because of the high  temperature.

● Color is for light what pitch is for sound.

Formulas

➢ v1/v2= n1/n2

➢ n= c/v

➢ E= h*f, c= f*λ, E= h*c/λ ……. h= 6.63 x 10^-34 J . s

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