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spring final review
| Question | Answer |
|---|---|
| the buoyant force equals | the objects weight |
| what is a complete cycle of motion | period |
| number of cycles or vibrations per unit of time | frequency |
| at a fixed boundary, waves are | reflected and inverted |
| standing waves are produced by periodic waves of | the same frequency, amplitude and wavelength traveling the opposite direction |
| sound waves are what kind of waves | longitudinal waves |
| what is the region of a longitudinal wave in which the density and pressure are greater than normal | compression |
| how high or low we perceive sound is called | pitch |
| what generally travel faster through solids than liquids? | sound waves |
| when the frequency of a force applied to a system matches the natural frequency of vibration of the system | resonance |
| when 2 tuning forks side by side that emits frequencies that differ by only a small amount | beats |
| relationship between frequency wavelength and speed holds for light waves because | all forms of electromagnetic radiation travel at a single speed in a vacuum |
| image created by a flat mirror | virtual upright and magnification=1 |
| refraction is the term for the bending of a wave disturbance as it passes at an angle from one ____ to another | medium |
| the _____of light can change when light is refracted because the wavelength changes | color |
| what will happen to a light ray incident on a glass-to-air boundary at greater than the critical angle | total refraction |
| a repelling force occurs between two charged objects when | charges are like signs |
| when a glass rod is rubbed with silk and becomes positively charged | electrons are removed from the rod |
| where is the magnitude of the magnetic field around a permanent magnet greatest | close to the poles |
| a current in a long straight wire produces a magnetic field. These magnetic fields lines | form circles that go around the wire |
| in a magnetized substance, the domains | line up mainly in one direction |
| whose principle says as the velocity of a fluid increases, its pressure decreases | Bernoulli's |
| whose principle says the pressure in a confined fluid increase remains the same throughout | Pascal's |
| whose principle says the buoyant force on an immersed object is equal to the weight of the fluid it displaces | Archimedes |
Created by:
dalizavez
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