Physics
Kinematics, force analysis, electricity, and equation-driven reasoning.
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which of the properties are true of neutron stars? roughly the size of …
- supported by neutron degeneracy pressure - mass greater than 1.4 solar masses - possible remnant of a Type II supernova
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the gold in jewelry was formed in supernovae. a distant galaxy. stars. …
supernovae.
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nuclei heavier than iron are formed in pulsars. in the cores of main se…
in the explosions of massive stars.
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why can the fusion of iron into heavier elements not support a star? fu…
Fusing iron into heavier elements consumes energy rather than releasing energy, resulting in the star collapsing.
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degeneracy pressure is most important in a star like the sun. a red gia…
a neutron star.
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an isolated white dwarf will eventually explode as a supernova when ele…
continue to cool indefinitely.
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which object has smallest radius? venus jupiter neutron star a - type m…
neutron star
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which object has smallest radius? venus jupiter neutron star a - type m…
Venus
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why does the core of a star collapse after fusion has stopped? the stro…
The gravitational attraction of the material in the star is large enough to overcome the outward radiation pressure from the core.
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place the events that occur at the end of a solar - mass stars life in …
1. Helium fusion begins in core 2. Double - shell burning of hydrogen and helium 3. Final stages of mass loss via stellar winds 4. Planetary nebula dissipates away 5. Inert carbon…
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after a low - mass star (i.e., a star less than about 8 solar masses) e…
None of the above options are correct.
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if a horizontal branch star burns helium at a higher temperature than a…
Red giant stars are bigger and give off more total light.
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when a star exhausts its core hydrogen, its core while the star as a wh…
The first blank: contracts The second blank: expands
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a high - mass star has a ○ equally long main sequence lifetime as a low…
1. C. shorter main sequence lifetime than a low - mass star. 2. A. uses up its nuclear fuel faster than a low - mass star does.
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the helium flash only occurs in low - mass stars because the extreme pr…
the density and pressure of the degenerate matter in the helium core allows for runaway fusion of helium
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the helium flash only occurs in because protostars binary stars high - …
low - mass stars
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particles in each state of matter behave differently because they have …
Particles in a solid are packed tightly. Particles in a solid have thermal energy.
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question 22 of 29 choose the correct statement. the cluster in h - r di…
The cluster in H - R diagram A is an open cluster because it still has blue main sequence stars.
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most of the substances around you exist in three common states of matte…
Solid: Third diagram Liquid: First diagram Gas: Second diagram
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2. the empire state building is an example of a ____________ characteri…
2. human - made 4. intermediate 6. coordinates 9. Prime Meridian
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the bone marking word \fissure\ is an example of a kind of: edge (a.k.a…
indentation (a.k.a. a place where the bone tissue in lower than the areas around it)
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what is true about the particles in a substance? select all that apply.…
Heating a substance can cause the substance to change state. Particles in all states of matter are constantly moving. The way particles move changes when the substance's thermal e…
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25 multiple choice 1 point the bone marking word \fissure\ is an exampl…
indentation (a.k.a. a place where the bone tissue in lower than the areas around it)
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vehicles are expected to be moving at around ________ on highways. 40 -…
C. 50 - 70 mph
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arrange the following elements from first to last to undergo nuclear fu…
First: hydrogen Second: helium Third: carbon Fourth: oxygen Last: silicon
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you may encounter _____ in rural areas at a higher rate than urban area…
wildlife or livestock
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you have learned about how particles in solids, liquids, and gases beha…
The text has multiple inaccuracies regarding how particles in substances behave as thermal energy changes.
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in a gas, particles are far from one another and constantly move in dif…
Liquids: Particles are arranged close together. Gases: Particles are spread far from one another. Both liquids and gases: Particles do not stay in the same position.
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what happens when you heat a liquid? the particles begin to slide past …
The particles gain thermal energy. The substance vaporizes and becomes a gas.
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the current location of the sun in the h - r diagram is shown as a poin…
B.
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the current location of the sun in the h - r diagram is shown as a poin…
The specific correct option among A, B, C, D cannot be determined without seeing the actual positions of the points on the H - R diagram in the image, but conceptually, it should …
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the current location of the sun in the h - r diagram is shown as a poin…
B.
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question 17 of 29 cluster a is much less dense closer older less massiv…
less dense
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the particles in both solids and liquids are arranged close together. b…
| | Solid | Liquid | |--|--|--| | The substance's shape does not depend on its container. | √ | × | | Particles move around one another. | × | √ | | Particles always stay near oth…
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what happens when you heat a solid? heating a substance increases its t…
The substance melts and becomes a liquid.
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your speed of travel is one of the key items fully under your control. …
FALSE
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question 16 of 29 > use the h - k diagram to arrange the star clusters …
Cluster β, Cluster γ, Cluster Δ, Cluster ε, Cluster Σ
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consider the hertzsprung - russell (h - r) diagram. which point on the …
B. point B
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example 4 what is the slope of the continental slope at cape hatteras? …
$-4.1$
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the habitable zone around a star is defined as the zone within which a …
the temperature would be right for liquid water to exist on a planet.
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hot jupiters are massive gas giant exoplanets that are physically simil…
They formed far from their stars, like Jupiter, and then migrated inward.
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what method might be used to detect the existence of the outer planet i…
radial velocity method
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question 12 of 29 > the light of the inner star as it orbits the center…
For the first part: is redshifted and is blueshifted (as it orbits, its radial velocity changes causing both). For the second part: radial velocity method
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question 13 of 29 > suppose an astronomer observes a star - system orie…
does not change
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the radial velocity method preferentially detects large planets that ar…
minimum mass
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most of the substances around you exist in three common states of matte…
First diagram: gas Second diagram: solid Third diagram: liquid
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the radial velocity method preferentially detects the central star and …
large planets that are close to
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astronomers have been able to determine the density of some exoplanets …
the transit and radial velocity methods.
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the transit method of finding exoplanets is the only reliable method us…
First part: requires sensitive cameras that can monitor the varying brightness of a star as a planet passes in front of it. Second part: an exoplanet's orbital plane must be nearl…
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the term exoplanet means an extrasolar planet, or a planet that orbits …
It is likely that there are billions of planets in our galaxy, the Milky Way.
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what temperature scale has zero as its lowest temperature? a. the avera…
D. The Kelvin scale
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what form of the ideal gas law would you use to calculate the volume of…
C. $V = \frac{nRT}{P}$
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your skills of ________ will be challenged in an urban area. scanning a…
scanning and hazard identification
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what is the ideal gas constant? a. it is a specific constant for a part…
C. It is a universal constant used for all gases.
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what is the total pressure of a gas mixture containing partial pressure…
B. 1.54 atm
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a t tauri star is a new star that has just initiated nuclear fusion and…
C. protostar that is just emerging from the cloud of dust and gas it formed within.
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what relationship does boyles law describe? a. the relationship between…
A. The relationship between pressure and volume
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world geography for $800 which sea between greece and turkey contains i…
The Aegean Sea
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what is the ideal gas law? a. a law comparing reactivities of different…
D. A law describing the properties of a gas
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science for $800 who is credited with discovering the antibiotic penici…
Alexander Fleming
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classify each event that occurs during the formation of a single star a…
Result from rotating gas cloud: rapidly rotating star, formation of a disk around the star, orbit of planets in a common plane around the star Do not result from rotating gas clou…
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what physical principle is responsible for these features? newtons thir…
conservation of angular momentum
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classify each event that occurs during the formation of a single star a…
Result from rotating gas cloud: Formation of a disk around the star, Orbit of planets in a common plane around the star, Rapidly rotating star Do not result from rotating gas clou…
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world geography for $1000 which spanish citys port faces africa across …
Algeciras
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which sport has the highest chance for tbi (traumatic brain injury)? sk…
B. football
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it is most difficult to study star formation at visible wavelengths. in…
First part: visible wavelengths Second part: Stars form in dusty regions that are opaque to these wavelengths.
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which of the processes can initiate the collapse of an interstellar clo…
collision with another cloud
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science for $1000 considering stars and space, what is the most abundan…
Hydrogen
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when is expressing numbers using scientific notation useful? a. when th…
C. When the numbers are very large or very small
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the diagram shows the field lines near the poles, x and y, of two magne…
X: north Y: north
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mr. garcia uses magnets to hold a poster on a steel filing cabinet beca…
A. iron
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two bar magnets are hung from metal rods and held in the position shown…
The two magnets will swing apart due to the repulsive force between the like (north) poles.
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a bar magnet and a second object are hung from metal rods. the diagram …
C. a bar magnet with its north pole on the left
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how many kilograms is 0.22 lb? a. 0.0998 kg b. 0.49 kg c. 0.454 kg d. 0…
A. 0.0998 kg
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fill in the blank with the regional term that is being described. the m…
1. Ulnar 2. Anterior 3. Radial
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which of the following is more effective as part of the hierarchy of co…
Implementing engineering controls to isolate workers from a hazard
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match the descriptive words or phrases with the different elements of m…
texture - imitative polyphony final chord - minor performing forces - keyboard/organ
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in this activity, you will explain what you just learned about the impo…
False
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directions - (1) place parentheses around each prepositional phrase. (2…
1. God walks (with the humble); He reveals Himself (to the lowly); He gives understanding (to the little ones); He discloses His meaning (to pure minds); but hides his grace (from…
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question 3 which sweat glands are only found in restricted areas? meroc…
B. Apocrine gland
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identify each of the following integumentary structures.
A. Sebaceous gland B. Arrector pili C. Hair follicle D. Subcutaneous fat E. Eccrine sweat gland F. Eccrine sweat gland (assuming similar glandular structures)
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identify each of the following layers of the epidermis. structure of th…
A. Stratum corneum B. Stratum lucidum C. Stratum granulosum D. Stratum spinosum E. Stratum basale
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question 7 which of the following is dominated by adipose tissue? hypod…
Question 7: Hypodermis Question 8: Epidermis
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what is the meaning of the word obfuscate as used in the passage? use t…
confuse or complicate
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read the passage. then, select the antonym of the word in bold. i was h…
clarify
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in a time when school shootings have become all too frequent, law enfor…
A. a shooting at the junior high school
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a. 142/96 b. 112/70 c. 78/62 vital signs must be taken on admission: a.…
1. a. True 2. a. Radial 3. a. True 4. a. True 5. a. Passive range of motion (PROM) 6. a. True 7. a. True 8. a. True 9. c. Stand on the left side slightly behind them 10. a. True 1…
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marrying a u.s. citizen can considerably speed the path towards legal p…
C. Craigslist
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which two forms of heat transfer work together to heat water in a plast…
B. conduction and convection
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which method of heat transfer is the transfer of heat through a liquid …
convection
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why does the water in a swimming pool stay cool on a hot, sunny day? be…
because of convection
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question 1 question 2 what would you do? though you decide not to join …
There is no clear - cut right or wrong answer, but considering the potential illegal nature of Steve's activities and the scale mentioned, the more responsible option could be: Yo…
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chapter 19 you decide question 1 / question 2 what is the purpose of a …
to punish acts that undermine the proper functions of a court or legislative body
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what is the difference between a conductor and an insulator? a conducto…
A conductor lets heat pass through it easily, and an insulator does not let heat pass through it easily.
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which of the following explains the process of radiation? when heat get…
when heat gets transferred through electromagnetic waves that move through space
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what is heat? temperature thermal energy electricity electromagnetic en…
thermal energy
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17. the physician orders cefazolin 500 mg im q8h. it is reconstituted w…
17. Approximately 1.52 mL 18. 1.04 mL 19. 1.5 mL 20. 0.8 mL
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a. 142/96 b. 112/70 c. 78/62 vital signs must be taken on admission: a.…
1. a. True 2. a. Radial, b. Apical, c. Brachial 3. a. True 4. a. True 5. a. Passive range of motion (PROM) 6. a. True 7. a. True 8. a. True 9. c. Stand on the left side slightly b…
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and choose the best answer to each question. let’s aim for mars by buzz…
To provide another place for people to live To see if there are signs of life in the universe
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chapter 31 measurements vital signs include pulse and respiration: a. t…
1. a. True 2. b. False 3. b. False 4. a. Tachypnea 5. b. Axillary 6. b. 60 - 100 7. b. False 8. a. True 9. b. 102 10. a. True