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| just a quantity (10 miles) |
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| flow from fundamental quantities (speed m/s) |
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| A vector includes two components ... |
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| a magnitude and a direction |
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| directly from beginning point to end point (flying to UD arena from school) |
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| Newton's First Law of Motion |
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| An object in motion tends to stay in motion just as an object at rest tends to stay at rest (inertia) |
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| Newton's Second Law of Motion |
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| F=ma or Force= mass x acceleration |
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| weight = mass x acceleration (gravity) |
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| Newton's Third Law of Motion |
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| For every action there is an equal and opposite reaction |
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| inertia of motion (mass x speed) |
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| force that acts x the length of time |
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| If the weight is 83.7 kg, and it is in free fall for 10 meters, what is its work? |
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| 83.7 kg x 10 m/s = 837 Newtons....then 837 N x 10 m = 8370 joules |
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| What is the power of a 8370 joules for 5 seconds? |
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| 8370 joules/5 sec = 1674 watts |
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| energy that is stored in an object |
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| the random, disordered motion of molecules |
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| the random, disordered motion of molecules |
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| the random, disordered motion of molecules |
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| Work Done = the change in KE |
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| Newton's Universal Law of Gravitation |
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M1(mass 1) and M2(mass 2) seperated by a distance (d)
M1xM2/d^2 |
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| how to turn heat transfer into work |
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| measure of the average translational KE per molecule (the hotter something is, the faster the molecules move) |
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| the energy needed to raise the temperature of 1 gram of H20 by 1 degree centigrade |
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| flow of energy by molecular collisions |
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| Heat transfer by "mass motion" |
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| charging atoms to become electromagnetically charged for heat transfer |
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| Region within a material where the magnetic moments are aligned in the same direction |
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| separated opposite charges in an object |
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| Charging an atom without contact (opposite charges attract) |
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| when two objects rub together one is more likely to leave more charged while the other is less charged... |
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| Charging by contact (conduction) |
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| When a charged object touches a neutral object and transfers its charge to the neutral object |
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| forced vibrations, at the natural frequency, enlarge amplitude vibrations |
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| A coil of wire moved into a magnetic field, a voltage (electric field present) will be induced in the wire. |
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| Electric field direction (north and south pole) |
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Definition
| Negative fields originate at the North Pole and terminate on South Pole |
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| a bundle of light energy (energy of a photon = the frequency) |
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| an electron at a lower level makes a jump to a higher energy level |
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excitation by absorption of photons & de-excitation by emission of photons
(emits red photon absorbs blue photon) |
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| Formulated the energy of a photon by creating incandescence light. |
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E(energy)=h(Planck's Constant)x f (frequency)
Planck's Constant = 6.676 x 10^-34 |
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| the distance between two crests (in meters) |
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| the number of crests (waves) that pass by a given point in space in a second. The number of cycles a wave completes in a second. |
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| the maximum displacement of a wave |
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1/frequency
(The period of time is takes to complete one cycle of the wave) |
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how fast the wave is traveling v(velocity)= wavelength x frequency |
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| a point on the wave of zero disturbance |
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| a wave that is perpendicular to the direction the wave is traveling |
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| a wave that travels in the direction of its disturbance (a sound wave pressurizes the air and travels through the region of less density |
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| when two water waves come together to occupy the same space. |
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| when two like waves collide to combine one wave thus eliminating one of the waves |
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| Einstein's explanation that when more energetic light hit an object that object will emit electrons |
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| 1000 times lighter than protons and possess a negative charge |
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| heavier than electrons and possess positive charges |
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| The force between two charges is proportional to the product of the charges divided by the square of the distance between them |
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| Coulomb's Law vs. Universal Law of Gravitation |
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| Gravity is a much weaker force and electrons have a much stronger force upon each other |
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| spots where the dipoles are lined up in a general way |
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