6265020
Description
Flashcards by Beth Maschmeier, updated more than 1 year ago
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Created by Beth Maschmeier
over 8 years ago
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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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