HS Sample Set 5, Round 6 from NSB
Recycling code 2 indicates which of the following types of plastic? W) Polyvinyl chloride X) Polystyrene Y) High-density polyethylene Z) Polyethylene terephthalate
W: W) Polyvinyl chloride
X: X) Polystyrene
Y: Y) High-density polyethylene
Z: Z) Polyethylene terephthalate
Answer: Y) Y) High-density polyethylene
If 4.67 g of butane reacts with 23.12 g of molecular oxygen to produce 2.67 g of carbon dioxide, what is the limiting reactant?
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If the derivative of f(x) is positive on the closed interval [a, b], then which of the following statements is true? W) f(x) is increasing on [a, b] X) f(x) has critical points at a and b Y) f(x) is constant on [a, b] Z) f(x) cannot have an inflection point on [a, b]
W: W) f(x) is increasing on [a, b]
X: X) f(x) has critical points at a and b
Y: Y) f(x) is constant on [a, b]
Z: Z) f(x) cannot have an inflection point on [a, b]
Answer: W) W) f(x) is increasing on [a, b]
Providing your answer in simplest form, give the volume in terms of π of the solid generated by revolving the region bounded by • \(y = \ln(x)\), • the x-axis, • \(x = 1\), and • \(x = e\) about the y-axis.
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Using \(g = 9.8\) m/s² and providing your answer to the nearest kilojoule, what is the gravitational potential energy of a 33 kg cart halfway down a 25 m high slope that is 60 m long?
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Assuming that the speed of sound in air is 343 m/s and providing your answer to the nearest integer, what is the fundamental frequency in hertz produced by a pipe of length 3 m that is open at both ends?
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What is the common name of the seabird that has the largest wingspan of any living bird, up to 11.5 ft?
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What adjective describes hormones that cause secretion of other hormones?
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Sodium azide and potassium nitrate react to inflate an airbag during a car crash primarily by producing which of the following gases? W) Nitrogen X) Oxygen Y) Potassium oxide Z) Sodium nitrate
W: W) Nitrogen
X: X) Oxygen
Y: Y) Potassium oxide
Z: Z) Sodium nitrate
Answer: W) W) Nitrogen
By name or number, identify all of the following four characteristics that are intensive properties of a bubble of air: 1) Density 2) Radius 3) Percent oxygen 4) Temperature
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Under which of the following conditions is the momentum of a system unchanged? W) The system is undergoing acceleration X) The system is acted upon by multiple forces Y) The net external forces are zero Z) The net internal forces are zero
W: W) The system is undergoing acceleration
X: X) The system is acted upon by multiple forces
Y: Y) The net external forces are zero
Z: Z) The net internal forces are zero
Answer: Y) Y) The net external forces are zero
Providing your answer to the nearest hundredth, what is the moment of inertia in kg·m² of a solid sphere with mass 2.5 kg and radius 0.30 m?
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Which of the following best describes surface airflow in a northern-hemisphere middle-latitude cyclone? W) Divergent and clockwise X) Divergent and counterclockwise Y) Convergent and clockwise Z) Convergent and counterclockwise
W: W) Divergent and clockwise
X: X) Divergent and counterclockwise
Y: Y) Convergent and clockwise
Z: Z) Convergent and counterclockwise
Answer: Z) Z) Convergent and counterclockwise
Name the kind of equilibrium state, characterized by a balance between internal pressure and gravity, of the dense gas or fluid of any main-sequence star.
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The single electron in the ground state of hydrogen is bound to the proton by 13.6 eV. If it is excited to the \(n=2\) state, by which of the following energies (in eV) is it now bound? W) 3.4 X) 6.8 Y) 13.6 Z) 54.4
W: W) 3.4
X: X) 6.8
Y: Y) 13.6
Z: Z) 54.4
Answer: W) W) 3.4
A model truck with mass 1.0 kg is accelerated by an electric motor from rest to 0.8 m/s in 20 ms. What is the average power, in watts, delivered by the motor during this time?
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Which of the following BEST represents the percentage of global oil reserves located in North America? W) 5 X) 10 Y) 15 Z) 20
W: W) 5
X: X) 10
Y: Y) 15
Z: Z) 20
Answer: W) W) 5
To study fuel and water use by migrating birds, what controlled environment do researchers use in order to assess fat stores, protein mass, water, and immunological function when birds fly long distances?
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Simplify \(i^{17}\) completely.
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Evaluate the following limit: \[ \lim_{n \to \infty} \bigl(1 + \tfrac{3}{n}\bigr)^{n}. \]
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On Earth, what is the average time from one high tide to the next, in hours and minutes?
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Which of the following correctly generalizes how crystal size compares between extrusive and intrusive rocks? W) Extrusive rocks have larger crystals X) Intrusive rocks have larger crystals Y) Extrusive and intrusive rocks have comparable crystal sizes Z) Crystal size is variable and unpredictable
W: W) Extrusive rocks have larger crystals
X: X) Intrusive rocks have larger crystals
Y: Y) Extrusive and intrusive rocks have comparable crystal sizes
Z: Z) Crystal size is variable and unpredictable
Answer: X) X) Intrusive rocks have larger crystals
Which of the following kinds of cells CANNOT be recharged? W) Dry X) Wet Y) Primary Z) Secondary
W: W) Dry
X: X) Wet
Y: Y) Primary
Z: Z) Secondary
Answer: W) W) Dry
A 600 N worker is standing 1.00 m from the left end of a 200 N scaffold that is 3.00 m long and supported by cables at each end. What is the tension (in newtons) in the right-hand cable?
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A fault is an example of which of the following types of strain? W) Brittle X) Elastic Y) Plastic Z) Dilational
W: W) Brittle
X: X) Elastic
Y: Y) Plastic
Z: Z) Dilational
Answer: W) W) Brittle
Which of the following properties of felsic melts makes them more viscous than mafic melts? W) Higher temperature X) Higher volatile content Y) Higher silica content Z) Erupting at a higher elevation
W: W) Higher temperature
X: X) Higher volatile content
Y: Y) Higher silica content
Z: Z) Erupting at a higher elevation
Answer: Y) Y) Higher silica content
Which of the following energy generation methods is the BEST source for baseload? W) Hydroelectric X) Wind Y) Solar Z) Tidal turbines
W: W) Hydroelectric
X: X) Wind
Y: Y) Solar
Z: Z) Tidal turbines
Answer: W) W) Hydroelectric
If 50.0 g of water cools from 35.10 °C to 26.05 °C, providing your answer to the nearest hundred joules, how much heat is released?
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Moths have evolved high-frequency hearing as a defense against which organisms?
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Give the common name of a family of large Asian birds that has the following unique nesting characteristic: when a female is ready to lay eggs, she enters a hole in a tree and seals off the entrance, leaving just a narrow opening. Once sealed inside, she becomes dependent on the male, who passes food through the hole while she incubates and raises the chicks.
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Which of the following statements is TRUE? W) A correlation of +0.8 is stronger than a correlation of −0.8 X) A correlation of +0.8 is weaker than a correlation of −0.8 Y) A correlation of +0.8 is just as strong as a correlation of −0.8 Z) It is impossible to tell which correlation is stronger
W: W) A correlation of +0.8 is stronger than a correlation of −0.8
X: X) A correlation of +0.8 is weaker than a correlation of −0.8
Y: Y) A correlation of +0.8 is just as strong as a correlation of −0.8
Z: Z) It is impossible to tell which correlation is stronger
Answer: Y) Y) A correlation of +0.8 is just as strong as a correlation of −0.8
Providing your answer in decimal form, what is the value of the infinite series \[ \sum_{n=0}^{\infty}\frac{3^n + 4^n}{5^n}\;? \]
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Cephalopods belong to which of the following groups? W) Mollusks X) Annelids Y) Roundworms Z) Arthropods
W: W) Mollusks
X: X) Annelids
Y: Y) Roundworms
Z: Z) Arthropods
Answer: W) W) Mollusks
By name or number, identify all of the following five animals that are even-toed ungulates: 1) Peccaries 2) Camels 3) Goats 4) Bison 5) Horses
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Which country supplies the U.S. with 95% of its needed rare earth elements, key components in electronics, solar panels, and hybrid cars?
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What kinds of electromagnetic emissions from the Crab Nebula were so stable that they were used for decades to calibrate space-borne instruments?
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Considering the function \(f(x)=2x^3+5x^2+4\), what is the instantaneous rate of change at the point \((-1,7)\)?
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Find all values of \(c\) such that the function \[ f(x)= \begin{cases} c^2\,x, & x\le2,\\ \frac{5}{4}\,c\,x^2 +3, & x>2 \end{cases} \] is continuous for all real \(x\).
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Proteins have different levels of structure. Which level of structure is identified with hydrogen bonds at regular intervals that produce alpha helices and beta-pleated sheets?
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If a student were to analyze the liquid in the nephrons of humans and the nephridia of earthworms, which of the following pairs of substances might be found in both organisms? W) Salts and urea X) Salts and sugar Y) Sugar and urea Z) Sugar and ammonia
W: W) Salts and urea
X: X) Salts and sugar
Y: Y) Sugar and urea
Z: Z) Sugar and ammonia
Answer: W) W) Salts and urea
What is the derivative of the integral of \(x^4\) with respect to \(x\)?
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Find the radius and the center, respectively, of the circle with equation \[ x^2 + y^2 -16x +12y +75 = 0. \]
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What element corresponds to the electron configuration 1s² 2s² 2p⁵?
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In which of the following sets of elements would all members be expected to have very similar chemical properties? W) Neon, oxygen, and fluorine X) Argon, bromine, and krypton Y) Magnesium, calcium, and barium Z) Aluminum, silicon, and phosphorus
W: W) Neon, oxygen, and fluorine
X: X) Argon, bromine, and krypton
Y: Y) Magnesium, calcium, and barium
Z: Z) Aluminum, silicon, and phosphorus
Answer: Y) Y) Magnesium, calcium, and barium
Which of the following most accurately provides the three necessary ingredients for thunderstorm formation? W) Moisture, lifting mechanism, instability X) Lifting mechanism, mountains, oceans Y) Stability, moisture, heat Z) Lifting mechanism, fronts, moisture
W: W) Moisture, lifting mechanism, instability
X: X) Lifting mechanism, mountains, oceans
Y: Y) Stability, moisture, heat
Z: Z) Lifting mechanism, fronts, moisture
Answer: W) W) Moisture, lifting mechanism, instability
The image resolution of a large optical telescope is most directly related to which of the following? W) Focal length of the objective X) Diameter of the objective Y) Atmospheric conditions of the observing site Z) Astigmatism of the optical system
W: W) Focal length of the objective
X: X) Diameter of the objective
Y: Y) Atmospheric conditions of the observing site
Z: Z) Astigmatism of the optical system
Answer: Y) Y) Atmospheric conditions of the observing site
Which of the following is an example of effusion? W) The formation of snowflakes in the upper atmosphere X) A hot air balloon flight Y) The evaporation of water from a lake Z) A bike tire losing air after running over a nail
W: W) The formation of snowflakes in the upper atmosphere
X: X) A hot air balloon flight
Y: Y) The evaporation of water from a lake
Z: Z) A bike tire losing air after running over a nail
Answer: Z) Z) A bike tire losing air after running over a nail
When hydrochloric acid in an aqueous solution reacts with solid sodium bicarbonate, what are the products?
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Which of the following monomers CANNOT be converted into an intermediate that can be used for cellular respiration? W) Fatty acids X) Glycerol Y) Amino acids Z) Nucleic acids
W: W) Fatty acids
X: X) Glycerol
Y: Y) Amino acids
Z: Z) Nucleic acids
Answer: Z) Z) Nucleic acids
What is the name for the technique in which DNA is digested using restriction enzymes, separated using gel electrophoresis, transferred to a filter, treated with an alkaline solution, and radioactively probed to search for specific DNA sequences?
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