HS Sample Set 2, Round 4 from NSB
A ray of light is moving through a vacuum at an angle of 60° from the vertical, when it enters an oil with a horizontal surface where the ray is bent so that it makes an angle of 30° with the vertical. Which of the following best represents the index of refraction of the oil? W) 0.5 X) 1.0 Y) 1.7 Z) 2.0
W: W) 0.5
X: X) 1.0
Y: Y) 1.7
Z: Z) 2.0
Answer: Y) Y) 1.7
A communications satellite is orbiting the Earth at a speed of 3000 meters per second. What would be the orbital speed in meters per second of a similar satellite that is 4 times as far from the center of the Earth as the first satellite?
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If a 1.5 megawatt turbine were to operate at its annual average all the time, about how many homes could it fully supply? W) 3 X) 100 Y) 330 Z) 550
W: W) 3
X: X) 100
Y: Y) 330
Z: Z) 550
Answer: Y) Y) 330
If you are driving 60 miles per hour and your car gets 30 miles per gallon, how many Btus of energy are you using per hour if gas contains 125,000 Btus per gallon?
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Which of the following is the IUPAC name for the acid with the formula CH₃CO₂H? W) Formic acid X) Butyric acid Y) Propionic acid Z) Ethanoic acid
W: W) Formic acid
X: X) Butyric acid
Y: Y) Propionic acid
Z: Z) Ethanoic acid
Answer: Z) Z) Ethanoic acid
Which of the following is the energy in joules of a photon with a frequency of 1.00 × 10⁶ GHz? W) 6.63 × 10⁻¹⁹ X) 6.63 × 10⁻²⁸ Y) 6.63 × 10⁻³⁴ Z) 6.63 × 10⁻⁴⁹
W: W) 6.63 × 10⁻¹⁹
X: X) 6.63 × 10⁻²⁸
Y: Y) 6.63 × 10⁻³⁴
Z: Z) 6.63 × 10⁻⁴⁹
Answer: W) W) 6.63 × 10⁻¹⁹
How many prime numbers less than 50 have a 3 as the units digit?
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If six geese in a gaggle produce 66 eggs in 6,666 days, what is the average number of days it takes a single goose to lay an egg?
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Upon which of the following is the Southern Oscillation Index based? W) The observed sea level pressure difference between Darwin and Tahiti X) The sea surface temperature between Darwin and Tahiti Y) The ozone levels at Toronto and Montreal Z) The amount of conduction at the equator
W: W) The observed sea level pressure difference between Darwin and Tahiti
X: X) The sea surface temperature between Darwin and Tahiti
Y: Y) The ozone levels at Toronto and Montreal
Z: Z) The amount of conduction at the equator
Answer: W) W) The observed sea level pressure difference between Darwin and Tahiti
Which of the following are three general categories of map projections? W) Cylindrical, conic, azimuthal X) Conformal, spherical, transverse Y) Equidistant, conic, stereographic Z) Cylindrical, oblique, grid
W: W) Cylindrical, conic, azimuthal
X: X) Conformal, spherical, transverse
Y: Y) Equidistant, conic, stereographic
Z: Z) Cylindrical, oblique, grid
Answer: W) W) Cylindrical, conic, azimuthal
Which of the following is NOT a direct adaptation for flight in birds? W) Air sacs X) Large surface area on sternum Y) Hollow bones Z) Fused hand bones
W: W) Air sacs
X: X) Large surface area on sternum
Y: Y) Hollow bones
Z: Z) Fused hand bones
Answer: W) W) Air sacs
Name all of the following four bones that are part of the human foot: 1) stylohyoid; 2) calcaneus; 3) metacarpals; 4) femur.
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A 5 kg mass is oscillating on a spring with a spring constant of 20 N/m. What is the frequency of the oscillation of this mass in radians per second?
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A 200 μF parallel plate capacitor is connected to a 6 V battery. Once the capacitor is fully charged, it is disconnected from the battery and a dielectric is inserted between the plates with dielectric constant 5. What is the new voltage across the capacitor?
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Which of the following is an example of a disaccharide? W) Glucose X) Sucrose Y) Cellulose Z) Glycogen
W: W) Glucose
X: X) Sucrose
Y: Y) Cellulose
Z: Z) Glycogen
Answer: X) X) Sucrose
How many milliliters of 0.1 M sulfuric acid must be titrated with 20 mL of 0.5 M sodium hydroxide to reach the equivalence point?
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The length of each edge of a cube is decreased by 40%. To the nearest ten percent, by what percent does the volume of the cube decrease?
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Today, my daughter is 1/3 of my age. Five years ago, she was 1/4 of my age then. How old is my daughter?
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Which of the following is another term for the euphotic zone of the ocean? W) Dark side X) Sunlit zone Y) Twilight zone Z) Abyssal plain
W: W) Dark side
X: X) Sunlit zone
Y: Y) Twilight zone
Z: Z) Abyssal plain
Answer: X) X) Sunlit zone
Which of the following minerals is a silicate mineral? W) Calcite X) Halite Y) Olivine Z) Galena
W: W) Calcite
X: X) Halite
Y: Y) Olivine
Z: Z) Galena
Answer: Y) Y) Olivine
Which of the following processes is a form of anaerobic respiration that occurs in skeletal muscles after strenuous exercise? W) Alcohol fermentation X) Lactic acid fermentation Y) Pentose-phosphate pathway Z) Glycogenesis
W: W) Alcohol fermentation
X: X) Lactic acid fermentation
Y: Y) Pentose-phosphate pathway
Z: Z) Glycogenesis
Answer: X) X) Lactic acid fermentation
Which of the following organisms is NOT matched to its anatomical structure for excreting salt? W) Fish and gill X) Shark and rectal gland Y) Whale and ocular salt gland Z) Seabird and nostril salt gland
W: W) Fish and gill
X: X) Shark and rectal gland
Y: Y) Whale and ocular salt gland
Z: Z) Seabird and nostril salt gland
Answer: Y) Y) Whale and ocular salt gland
Which of the following is the characteristic feature of a metallic crystal? W) The metallic bond is directional X) The positive ion is free to move Y) The bonding forces are weak Z) The valence electrons are only loosely held and can move to neighboring atoms
W: W) The metallic bond is directional
X: X) The positive ion is free to move
Y: Y) The bonding forces are weak
Z: Z) The valence electrons are only loosely held and can move to neighboring atoms
Answer: Z) Z) The valence electrons are only loosely held and can move to neighboring atoms
Consider the complete combustion of propane in oxygen. If 32 g of oxygen are consumed in the reaction, how many grams of carbon dioxide are produced? (Provide your answer to two significant figures.)
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A proton enters a uniform magnetic field that is oriented perpendicular to the motion of the proton. Which of the following will NOT affect the radius of the circular path in which the proton moves? W) The velocity of the proton X) The magnitude of the magnetic field Y) The momentum of the proton Z) The position of the proton in the magnetic field
W: W) The velocity of the proton
X: X) The magnitude of the magnetic field
Y: Y) The momentum of the proton
Z: Z) The position of the proton in the magnetic field
Answer: Z) Z) The position of the proton in the magnetic field
A long wire is carrying 10 A of current. What is the magnetic field in teslas due to the wire at a radial distance of 2 m from the center of the wire? (Provide your answer in scientific notation.)
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To the nearest 10%, what is the approximate efficiency of commercially available high performance solar cells?
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If a solar panel produces 200 W of power, the energy is used to charge a battery with 80% efficiency, and the battery discharges with 80% efficiency, what percentage of the power is lost in the storage process?
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In electroplating, the object to be electroplated is placed at which of the following? W) The anode X) The cathode Y) Either the anode or cathode Z) The salt bridge
W: W) The anode
X: X) The cathode
Y: Y) Either the anode or cathode
Z: Z) The salt bridge
Answer: X) X) The cathode
Which of the following compounds exhibits hydrogen bonding and can act as a Lewis base? W) Ozone X) Ammonia Y) Cesium fluoride Z) Hydrogen fluoride
W: W) Ozone
X: X) Ammonia
Y: Y) Cesium fluoride
Z: Z) Hydrogen fluoride
Answer: X) X) Ammonia
What integer between 50 and 90 is four times as far from 50 as it is from 90?
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Divide the polynomial \(x^3 - x - 6\) by \(x - 2\).
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Which of the following cities is on the North American tectonic plate? W) Los Angeles X) San Diego Y) San Francisco Z) Santa Cruz
W: W) Los Angeles
X: X) San Diego
Y: Y) San Francisco
Z: Z) Santa Cruz
Answer: Y) Y) San Francisco
What is the name of the metamorphic rock that is dominantly composed of hornblende?
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A tissue sample is striated and has intercalated disks between cells. Which type of tissue is it? W) Liver X) Heart Y) Skeletal muscle Z) Brain
W: W) Liver
X: X) Heart
Y: Y) Skeletal muscle
Z: Z) Brain
Answer: X) X) Heart
Which of the following groups consists only of strictly vegetarian marine mammals? W) Sirenians X) Pinnipeds Y) Cetaceans Z) Fissipeds
W: W) Sirenians
X: X) Pinnipeds
Y: Y) Cetaceans
Z: Z) Fissipeds
Answer: W) W) Sirenians
A long wire carrying a 3 A current is placed in a magnetic field of 1 T so that a straight 2 m segment of the wire makes an angle of 30° with the field direction. What is the magnitude of the force in newtons on the wire segment?
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A charge of +1 nC is placed at the origin, and a charge of +4 nC is placed 10 cm away. At what distance from the origin is the electric field zero? (Provide your answer in centimeters to the nearest tenth.)
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If a heat pump can use 1 Btu of electricity to move 4 Btus of cooling, how many Btus of electricity are needed to provide 100 Btus of cooling?
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If you have one pound each of natural gas, dry wood, and coal, which has the greatest amount of energy content?
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Which of the following interactions is an example of commensalism? W) Ants living in acacia thorns, feeding on protein bodies and attacking herbivores X) Two species of barnacle occupying different tidal regions Y) Ticks attaching to deer and feeding off their blood Z) Cattle egrets following water buffalo to feed on insects scared out of grass by the buffalo
W: W) Ants living in acacia thorns, feeding on protein bodies and attacking herbivores
X: X) Two species of barnacle occupying different tidal regions
Y: Y) Ticks attaching to deer and feeding off their blood
Z: Z) Cattle egrets following water buffalo to feed on insects scared out of grass by the buffalo
Answer: Z) Z) Cattle egrets following water buffalo to feed on insects scared out of grass by the buffalo
Which of the following characteristics is least common to see in non-migratory abyssopelagic zone fish species? W) Swim bladder X) Hermaphroditism Y) Small eyes Z) Large mouths
W: W) Swim bladder
X: X) Hermaphroditism
Y: Y) Small eyes
Z: Z) Large mouths
Answer: W) W) Swim bladder
All except which of the following are true for rubidium fluoride? W) It has a high boiling point X) It dissolves in aqueous ammonia Y) It conducts electricity in the solid state Z) It is an electrolyte
W: W) It has a high boiling point
X: X) It dissolves in aqueous ammonia
Y: Y) It conducts electricity in the solid state
Z: Z) It is an electrolyte
Answer: Y) Y) It conducts electricity in the solid state
A sample of an ideal gas is placed in a sealed container of fixed volume. The gas is heated from 25.0 °C to 45.0 °C. Identify all of the following four factors that will increase: 1) the pressure of the gas 2) the average kinetic energy of the gas 3) the density of the gas 4) the intermolecular forces
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What is the radian equivalent of 96°? W) \(\tfrac{2\pi}{15}\) X) \(\tfrac{4\pi}{15}\) Y) \(\tfrac{8\pi}{15}\) Z) \(\tfrac{23\pi}{15}\)
W: W) \(\tfrac{2\pi}{15}\)
X: X) \(\tfrac{4\pi}{15}\)
Y: Y) \(\tfrac{8\pi}{15}\)
Z: Z) \(\tfrac{23\pi}{15}\)
Answer: Y) Y) \(\tfrac{8\pi}{15}\)
Solve the inequality \(-3 + \lvert 3 - 6x\rvert < 2\).
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What chemical associated with volcanic eruptions can get into the stratosphere and cause a dampening of the Sun’s rays?
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Based on the current northwest movement of the Pacific plate, which of the following Hawaiian islands is the youngest? W) Kauai X) Maui Y) Hawaii Z) Oahu
W: W) Kauai
X: X) Maui
Y: Y) Hawaii
Z: Z) Oahu
Answer: Y) Y) Hawaii
What protein is often found in the red muscles of fish that are strong swimmers?
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Which of the following types of lipid modification connects proteins to cytosolic membrane surfaces and is reversible? W) Palmitoylation X) Prenylation Y) Myristoylation Z) Acylation
W: W) Palmitoylation
X: X) Prenylation
Y: Y) Myristoylation
Z: Z) Acylation
Answer: W) W) Palmitoylation