Questions asked by JuliaKim

• Back to user's profile
• Next
• How can I perform the following operation 100-23, taking into account the number of significant figures?
  
• How can I perform the following operation 32500 + 26 823 - 56 000 taking into account the number of significant figures?
  
• How would zero velocity and nonzero acceleration be represented on a velocity-time graph?
  
• How can an object (e.g. car) have zero velocity and nonzero (+/-) acceleration?
  
• Can you help me interpret the motion of the following position-time graph?
  
• A ball falling from rest is located 45m below its starting point 3.0s later. Assuming that its acceleration is uniform, what is its value?
  
• The brakes are applied on a car traveling at 30. m/s [fwd]. The car stops in 3.0s. What is its displacement during this time?
  
• Does the 3rd electron shell have a capacity for 8e- or 18e-?
  
• In terms of electron affinity, can you explain this statement: "the stronger the attraction, the more energy is released"?
  
• The least electronegative elements are the?
  
• The element with the smallest atomic radius is?
  
• How does valence e- relate to an element's chemical properties?
  
• What is the most reactive group on the periodic table?
  
• A ball rolling down a hill at 4.0 m/s accelerates at 2.0 m/s2. What is its velocity 5.0s later?
  
• How do valence e- determine an element's reactivity?
  
• How can you distinguish between animal, plant and fungi-like protists?
  
• Why do elements in the same group have similar physical properties?
  
• The least electronegative group is the...?
  
• How is Lucy, the A. Afarensis, evidence of evolution?
  
• In projectile motion, why does an object that is vertically dropped down and an object that is horizontally launched reach the ground at the same time?
  
• Two objects, no matter what their mass is, will reach the ground at the same time, because...?
  
• Why are vertical and horizontal motion considered independent?
  
• Is initial velocity and final velocity instantaneous?
  
• What is initial and final velocity?
  
• What is terminal velocity?
  
• When does initial and final velocity occur in an object that is thrown downwards?
  
• What are the differences between animal, plant and fungi-like protists?
  
• What are spores?
  
• Can you provide some examples of protists that are unable to move?
  
• Sexual reproduction in fungi is called...?
  
• If a baseball player throws a ball at 35.0 m/s what is its maximum range?
  
• What were the living conditions like for those who built the Pyramids?
  
• Can a molecule with nonpolar bonds be polar?
  
• Do fungi have specialized cells?
  
• A baseball thrown from shortstop position to first base, travels 32 m horizontally, rises 3.0 m and falls 3.0 m. Find the magnitude of the initial velocity?
  
• How can you tell if two atoms are in the same plane?
  
• What does a vertical line represent on a velocity-time graph?
  
• What is the total number of e- in diaminopropane?
  
• Which have higher melting points ionic or metallic compounds?
  
• Why is lattice energy considered to be potential energy?
  
• Why does NH3 have a lower boiling point than H2O?
  
• Is #"P"_2"Cl"_4# a polar or non-polar molecule?
  
• What is chromatin? Does it compose the chromosomes?
  
• What is the difference between a homologous chromosome and a tetrad?
  
• What is the difference between astral rays and spindle fibres?
  
• Who discovered complementary base pairing?
  
• Are polyatomic ions ionic?
  
• Why is #H_2S# called hydrogen sulfide instead of dihydrogen sulfide?
  
• Why H3P(g) called hydrogen phosphide and not hydrogen monophosphide?
  
• What is the reaction force for the force of gravity acting on an object?
  
• Why is the nomenclature for Mercury (I) Fluoride Hg2F2 and not HgF?
  
• What would be the forces on the free-body diagram of a flag?
  
• How can friction cause motion?
  
• How is the force of friction related to the normal force?
  
• If two people pull on either side of a rope with a force of 250 N why do we say that the force of tension in the rope 250 N?
  
• Is H3P called trihydrogen monosphosphide or hydrophosphoric acid?
  
• What is the chemical formula for ammonium tetraborate?
  
• If two people pull on either side of the rope with a force of 65N, why is the tension in the rope 65N?
  
• Is "purebred" synonymous with "homozygous"?
  
• What is an example of a relation (not a function) in which {x ∈ R} and {y ∈ R}?
  
• What is the domain and range of a line on the x-axis?
  
• Apply Newton's First Law of motion to explain the danger in travelling too quickly on a curve of an icy highway?
  
• What does the reaction of CO2(g) + H2O(l) produce?
  
• What is the difference between Fg = mg and Universal Gravitation?
  
• Is running an example of kinetic or static friction?
  
• Universal Gravitation Problem?
  
• At what height above the Earth’s surface would the Earth’s gravitational field strength be equal to 7.5 N/kg?
  
• What is the significance of the ratio of 9:3:3:1 in Mendelian Genetics (i.e. dihybrid cross)?
  
• According to Newton's first law, when standing in an elevator accelerating upwards quickly, in which direction in your body are you likely to feel the blood rush?
  
• What does Mendel's Law of Independent Assortment mean?
  
• What is the difference between thymidine monophosphate and thymidine?
  
• How to predict the products of the reaction of CO2(g) + KOH(aq)?
  
• Functions 11 Word Problem?
  
• If the roots of ax^2 + bx +c = 0 are in the ratio 3:4, prove that 12b^2 = 49ac?
  
• What is mechanical energy?
  
• Are antigens made of glycoproteins?
  
• Are antigens glycoproteins?
  
• What are the units for isotopic abundance?
  
• What is the GPE of the 10-kg rock at the top of the house, at the top of the cliff and at the bottom of the cliff?
  
• Which object would fall to the ground faster: a heavy mass or a feather? (Please correct my logic).
  
• What is the difference between "mole" and "Avogadro's constant"?
  
• What is a unified atomic mass unit? How is it equivalent to 1 g/mol?
  
• Does a moving massive object have more kinetic energy than a lighter object?
  
• What is the number of molecules in 1.00 mol of iodine crystals?
  
• The molecular mass of water is 18.02 amu. What is the mass of Avogadro’s number of water molecules?
  
• What are conservative forces?
  
• Why are alleles IA and IB considered codominant?
  
• How did Mendel derive the Law of Segregation and Independent Assortment from his experiments?
  
• Why does 1 amu = 1 g/mol?
  
• A sample of C25H52 weighs 29.29 g. Its molar mass is 352.77g/mol. How many grams of carbon are in this sample?
  
• What is the relationship between work and energy?
  
• What is the difference between multiple alleles and polygenic inheritance?
  
• Why is it important for Mendel's pea plant to be a purebred variety?
  
• Why is Q = ∆U (heat = change in thermal energy)?
  
• Calculate the heat required to raise the temperature of 0.75 kg of water from 5˚C to 90.˚C?
  
• Why do we abbreviate trisomy as n + 1?
  
• Is HCN a molecular or ionic compound?
  
• Can two different chemicals have the same molar mass?
  
• Calculate the heat required to raise the temperature of 2.0 kg of ice at -25˚C to 70.˚C?
  
• What is the smallest entity of a hydrate (e.g. CuSO4 • 5H2O)? (A formula unit?)
  
• Next