# Maschmeier physics Chapters 1 and 2 test flash cards

Flashcards by Beth Maschmeier, updated more than 1 year ago Created by Beth Maschmeier about 4 years ago 23 0

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Flashcards for Maschmeier physics test 1 ## Resource summary

 Question Answer Mercury has a boiling point of 356.58C and a melting point of -38.87C what state is it in at -240C? Solid, Liquid, Gas or Plasma Solid What Particle or particles of the atom's nucleus determine the atomic number? Protons What is conserved? Mass or Energy? Energy What fundamental quantity is still a physical object? Mass Who first described inertia? Newton Tolerance represents what? The precision of a measuring instrument and the maximum deviation from the mean What depends on the strength of gravity? Weight Einstein developed what equation? E=mc^2 The state of matter in which an object exists depends on what? The pressure and temperature Energy is The capacity to do work The most common reference for measurements of kinetic energy is what? Earth Physics is what? The study of matter and energy in motion What is inertia? Objects are rest remain at rest and objects in motion remain in motions unless acted upon by a force The type of error known as ______ can not be eliminated. Random error What is the mass of a 2.00cm^3 block of iron? The density of iron is 7.87g/cm^3? What is it's specific gravity? using D=m/v 15.7g and 7.87 express your answer in significant digits 3.487+1348.7 1352.2 (3.75x10^6) x (2.54x10^3) 9.53x10^9 What form of energy does the following represent? A)flower pot on a windowsill B) a rolling car C) oppositely charged particles sitting apart D) a bowstring at rest A) gravitational potential energy B) kinetic energy C) electric potential energy D) elastic potential energy convert 6 days to seconds (6days)x(24hrs/1day)x(3600s/1hr)= 518,400s A physics teacher drops a ball from a height, the students below time how long it takes the ball to fall, they have the following times. Student 1: 4.48s student 2: 4.85s Student3: 5.06s Student 4: 5.12s what is the absolute error taken by student 4? Using Ea=I M-average of MI Average of M=(4.48s+4.85s+5.06s+5.12s)/4 average of M=4.88s |5.12s-4.88s|= .24s What is the relative error student 4? Er=(Ea/average of M) x100% Er=(.24s/4.88s)x100% Er=4.9%

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