HS Sample Set 13, Round 3 from NSB
Scientists at Fermi National Accelerator Lab are upgrading the CMS detector in the LHC. The CMS detector includes a large magnet consisting of a coil wrapped into a tight helix that generates a uniform magnetic field within its coils. What is the general term for this type of magnet?
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Researchers at Pacific Northwest National Lab are studying purple sulfur bacteria, which perform photosynthesis. Unlike in plants, however, their photosynthesis overall reaction does not produce what gas?
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Solar observatories sometimes spot sungrazers, which are manifestations of what type of object?
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Through how many constellations of the night sky does the ecliptic pass?
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What virus is the target of vaccines that are designed to prevent cervical cancer?
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Rotifers can reproduce asexually by having a female organism develop from an unfertilized egg. What is the term for this type of reproduction?
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What term is used to describe a hydrocarbon that only possesses carbon–carbon single bonds?
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Phosphorous trioxide is misnamed. If the molar mass of phosphorous trioxide is 220 g/mol and is approximately 56 % phosphorous by mass, what is its molecular formula?
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Jan drops a football off a cliff and notes that it takes 4 seconds for it to hit the ground. She throws an identical football from the same height, but with a horizontal velocity of 3.4 m/s. Assuming the ground is level, how far, in meters, from the base of the cliff will it land?
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A disk is spinning at 950 rotations per minute. To the nearest ten radians per second, how fast is it spinning?
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What is \(\tfrac{4}{15}\) divided by \(\tfrac{6}{25}\)?
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If \(x\) is inversely proportional to \(y^3\) and if \(x = 3\) when \(y = 4\), what is the value of \(x\) when \(y = 3\)?
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Gigantism in humans is typically caused by a tumor in the pituitary gland that produces an excess of what hormone?
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Alpha- and beta-adrenergic agonists are medications whose structures mimic which of the following hormones? W) Insulin X) Glucagon Y) Acetylcholine Z) Epinephrine
W: W) Insulin
X: X) Glucagon
Y: Y) Acetylcholine
Z: Z) Epinephrine
Answer: Z) Z) Epinephrine
Which of the following mixtures of solvents would have a negative deviation from Raoult’s law? W) Water and acetone X) Water and ethanol Y) Hexane and acetone Z) Hexane and pentane
W: W) Water and acetone
X: X) Water and ethanol
Y: Y) Hexane and acetone
Z: Z) Hexane and pentane
Answer: W) W) Water and acetone
Rank the following three alkanes in increasing order of their melting points: 1) Pentane; 2) Ethane; 3) Nonane.
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Identify all of the following three statements that are true of specific gravity: 1) It can be expressed in grams per liter 2) Some materials can have a negative specific gravity 3) Aluminum has a positive specific gravity
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Kate pushes a box 3 meters horizontally by applying a 200-newton force at an angle of 60° to the horizontal. In joules, how much work did she do on the box?
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Which of the following is NOT a geologic period? W) Devonian X) Jurassic Y) Paleogene Z) Cenozoic
W: W) Devonian
X: X) Jurassic
Y: Y) Paleogene
Z: Z) Cenozoic
Answer: Z) Z) Cenozoic
Which soil horizon typically contains clay transported from overlying horizons? W) A X) E Y) B Z) C
W: W) A
X: X) E
Y: Y) B
Z: Z) C
Answer: Y) Y) B
The graph of the equation \(y = 4x + 5\) has points in all quadrants except which one?
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What is the units digit of \(9^{66}\)?
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Researchers at the Joint BioEnergy Institute are searching for temperature-stable cellulase enzymes. What group of extremophiles may contain these enzymes?
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Scientists at Oak Ridge National Lab are using neutron spallation to study rocks fractured in the process of fracking. These rocks fractured because they were subjected to what substance at very high pressures?
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What part of a galvanic cell allows ions to flow between the compartments without mixing the solutions in those compartments?
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How many radial nodes are in a 5p orbital?
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What is the second derivative with respect to \(x\) of \(2x^3 + 4x - 7\)?
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A class of 10 students selects a different student of the month each month during February, March, April, and May. In how many different ways can the 4 honored students be selected?
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Observations made with LIGO mark the dawn of gravitational wave astronomy. What is the ratio of the speed of gravitational waves to the speed of light?
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In a nuclear reactor, the consumption of uranium fuel results in the production of fission gases. Which of the following noble gases is commonly produced? W) Helium X) Argon Y) Xenon Z) Neon
W: W) Helium
X: X) Argon
Y: Y) Xenon
Z: Z) Neon
Answer: Y) Y) Xenon
Identify all of the following three statements that are true about friction: 1) Friction is a non-conservative force 2) Tires require friction in order to roll 3) The coefficient of static friction is typically less than the coefficient of kinetic friction
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Identify all of the following three quantities associated with a test charge in an electrostatic system that are dependent on the magnitude of the charge on the test charge: 1) Electric field 2) Electrical potential 3) Electric potential energy
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What principle of geology states that sedimentary beds originate as continuous layers that extend in all directions and eventually grade into different sediments or thin out? W) Superposition X) Original horizontality Y) Faunal succession Z) Lateral continuity
W: W) Superposition
X: X) Original horizontality
Y: Y) Faunal succession
Z: Z) Lateral continuity
Answer: Z) Z) Lateral continuity
Identify all of the following three types of storms that are tropical cyclones: 1) Tornado 2) Typhoon 3) Derecho
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Pulmonary veins bring blood to what chamber of the mammalian heart?
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Chytrid cell walls are supported by what polymer?
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The point \((7,6)\) is reflected across the \(y\)-axis, and the resulting point is then translated 2 units down. What are the coordinates of the final image point?
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For what values of \(c\) is \(x = c\) a vertical asymptote for the function \(f(x)=\frac{x^2 - 49}{2x^2 + 9x - 35}\)?
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The nucleolus in eukaryotic cells is the site of the synthesis of the components of what organelle?
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Place the following three structures in the order in which air would pass through them during expiration: 1) Pharynx; 2) Larynx; 3) Trachea.
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Planet X has the same mass as Earth but one-third of its surface gravitational acceleration. What is the ratio of Planet X’s radius to Earth’s radius?
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Identify all of the following three statements that are true of electric dipoles in an electric field: 1) A non-uniform field can cause translational acceleration 2) In a uniform field, the net torque is directly proportional to the field strength 3) In a uniform field, the net force is zero
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In organic chemistry, what is the term for a species with empty orbitals that tends to accept electrons in a chemical reaction?
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Rank the following three isotopes in terms of increasing number of neutrons: 1) Cobalt-57; 2) Iron-57; 3) Manganese-57.
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Ishtar Terra is a surface province on what solar system object?
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What prominent star in the night sky has the approximate celestial sphere coordinates of 2 h 32 m right ascension and 89° 16′ declination?
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