Maschmeier physics Chapters 1 and 2 test flash cards

Beth Maschmeier
Flashcards by Beth Maschmeier, updated more than 1 year ago
Beth Maschmeier
Created by Beth Maschmeier about 4 years ago
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Flashcards for Maschmeier physics test 1
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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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