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Questions and Answers
What does Newton's First Law state?
What does Newton's First Law state?
An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
What does Newton's Second Law state?
What does Newton's Second Law state?
The change of motion of a body is proportional to and in the direction of the force acting on it.
What is Newton's Law of Gravitation?
What is Newton's Law of Gravitation?
$f1 = f2 = g * (m1*m2) / r^2$
Objects fall at which rate, independent of mass?
Objects fall at which rate, independent of mass?
What does Kepler's Third Law state?
What does Kepler's Third Law state?
What is Angular Momentum?
What is Angular Momentum?
What is light?
What is light?
What is another term for light?
What is another term for light?
List differences between light and sound waves.
List differences between light and sound waves.
Define wavelength.
Define wavelength.
Define Frequency.
Define Frequency.
What is a photon?
What is a photon?
List two distinct ways to observe stellar spectra.
List two distinct ways to observe stellar spectra.
What is Blackbody Radiation?
What is Blackbody Radiation?
What is an Atomic Nucleus?
What is an Atomic Nucleus?
What are Atomic Orbitals?
What are Atomic Orbitals?
What defines an element?
What defines an element?
What defines an isotope?
What defines an isotope?
When is an atom "neutral", a "positive ion", and a "negative ion"?
When is an atom "neutral", a "positive ion", and a "negative ion"?
What is Newton's First Law?
What is Newton's First Law?
What is Newton's Second Law?
What is Newton's Second Law?
What is Kepler's Third Law?
What is Kepler's Third Law?
What are the differences between light and sound waves?
What are the differences between light and sound waves?
What is wavelength?
What is wavelength?
What is frequency?
What is frequency?
What are 2 distinct ways to observe stellar spectra?
What are 2 distinct ways to observe stellar spectra?
What are the conditions for a neutral atom, a positive ion, and a negative ion, in terms of protons (p) and electrons (e)?
What are the conditions for a neutral atom, a positive ion, and a negative ion, in terms of protons (p) and electrons (e)?
Define angular momentum.
Define angular momentum.
Define photon.
Define photon.
Define blackbody radiation.
Define blackbody radiation.
Define atomic nucleus.
Define atomic nucleus.
Define atomic orbitals.
Define atomic orbitals.
Define element.
Define element.
Describe the relationship between protons (p), electrons (e) and a neutral atom, positive ion and negative ion
Describe the relationship between protons (p), electrons (e) and a neutral atom, positive ion and negative ion
Flashcards
Newton's First Law
Newton's First Law
An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
Newton's Second Law
Newton's Second Law
The change of motion of a body is proportional to and in the direction of the force acting on it.
Newton's Third Law
Newton's Third Law
For every action there is an equal and opposite reaction
Newton's Law of Gravitation
Newton's Law of Gravitation
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The same rate
The same rate
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Kepler's First Law
Kepler's First Law
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Kepler's Second Law
Kepler's Second Law
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Kepler's Third Law
Kepler's Third Law
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Angular Momentum
Angular Momentum
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What is Light?
What is Light?
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What is another term for light?
What is another term for light?
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Differences between light and sounds waves
Differences between light and sounds waves
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Wavelength
Wavelength
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Frequency
Frequency
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Photon
Photon
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2 Distinct Ways to Observe Stellar Spectra
2 Distinct Ways to Observe Stellar Spectra
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Blackbody Radiation
Blackbody Radiation
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Atomic Nucleus
Atomic Nucleus
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Atomic Orbitals
Atomic Orbitals
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Element
Element
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Isotope
Isotope
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Study Notes
- Study notes on Astronomy Exam 2
Newton's First Law
- An object will remain at rest or in motion at a constant speed and direction unless acted upon by an external, unbalanced force.
Newton's Second Law
- A body's change in motion is proportional to the force acting on it and occurs in the direction of that force.
Newton's Third Law
- Every action has an equal and opposite reaction.
Newton's Law of Gravitation
- The gravitational force (f) between two objects is calculated as: f1 = f2 = g * (m1*m2) / r^2
Rate of Falling Objects
- Objects fall at the same rate, regardless of their mass.
Kepler's First Law
- Planets orbit the Sun in an ellipse, with the Sun at one focus.
Kepler's Second Law
- A line connecting a planet to the Sun sweeps out equal areas during equal time intervals.
Kepler's Third Law
- The square of a planet's orbital period is proportional to the cube of the semi-major axis of its orbit.
Angular Momentum
- This is the rotational momentum of an object that is either spinning or orbiting.
Nature of Light
- Light behaves as both a particle and a wave.
Light
- Light can also be referred to as electromagnetic radiation.
Light Vs Sound Waves
- Light is a transverse wave, while sound is a longitudinal wave.
- Light can be polarized, but sound cannot.
- Light travels much faster than sound with light at 300,000,000 m/s, sound at 340 m/s.
- Sound requires a medium to propagate, light does not.
Wavelength
- The distance between crests or troughs of adjacent waves and is measured in meters.
Frequency
- The number of complete wavelengths passing a point per unit time, measured in Hertz.
Photon
- A photon is a particle of light.
Observing Stellar Spectra
- Stellar spectra can be observed through spectral curves (blackbody curves) and spectral lines (absorption or emission).
Blackbody Radiation
- This refers to the emission of light from hot objects.
Atomic Nucleus
- The central core of an atom which contains protons and neutrons.
Atomic Orbitals
- Regions around the nucleus where electrons are most likely to be found.
Element
- Defined by its number of protons.
Isotope
- Defined by its number of neutrons.
Atom Electrical Charge
- p=e: Atom is neutral
- p>e: Atom is positively charged
- p
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