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Terms in this set (30)
the combination of two or more electromagnetic waveforms to form a resultant wave in which the displacement is either reinforced or canceled.
an electromotive force or potential difference expressed in volts.
Experimentally, it was found that current is proportional to voltage for conductors. The proportionality constant is the resistance in the circuit. This relationship is called Ohm's law: V = IR. Resistance is measured in ohms ( W): an ohm is equal to 1 volt/1 ampere.
Gas, Liquid, Solid
3 different phases
the maximum extent of a vibration or oscillation, measured from the position of equilibrium.
the rate at which a vibration occurs that constitutes a wave, either in a material (as in sound waves), or in an electromagnetic field (as in radio waves and light), usually measured per second.
Atoms are made of extremely tiny particles called protons, neutrons, and electrons. Protons and neutrons are in the center of the atom, making up the nucleus. Electrons surround the nucleus. Protons have a positive charge. Electrons have a negative charge.
a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.
Conduction, convection, radiation
Heat can be transferred from one place to another by three methods: conduction in solids, convection of fluids (liquids or gases), and radiation through anything that will allow radiation to pass. The method used to transfer heat is usually the one that is the most efficient.
the lowest temperature that is theoretically possible, at which the motion of particles that constitutes heat would be minimal. It is zero on the Kelvin scale, equivalent to -273.15°C or -459.67°F.
OK, back to work. You can convert between Celsius and Kelvin like this: Kelvin = Celsius + 273.15. Often, the value of 273 is used instead of 273.15.
A scalar or scalar quantity in physics is a physical quantity that can be described by a single element of a number field such as a real number, often accompanied by units of measurement. A scalar is usually said to be a physical quantity that only has magnitude and no other characteristics.
*Must know units for all variables
Definition of Resonance - "The increase in amplitude of oscillation of an electric or mechanical system exposed to a periodic force whose frequency is equal or very close to the natural undamped frequency of the system."
The sensation of a frequency is commonly referred to as the pitch of a sound. A high pitch sound corresponds to a high frequency sound wave and a low pitch sound corresponds to a low frequency sound wave. ... Such sound waves form the basis of intervals in music.
Power, Force, Momentum
force = mass x rate of change of velocity. Now, the momentum is mv, mass x velocity. This means for an object having constant mass (which is almost always the case, of course!) ... From Newton's Third Law, the force A feels from B is of equal magnitude to the force B feels from A, but in the opposite direction.
Potential and Kinetic Energy
Difference Between Kinetic Energy and Potential Energy. Energy implies as the object's capability to perform work. ... While kinetic energy is the energy which an object contains because of a particular motion. On the other hand, potential energy is the stored energy, because of its state of rest.
of or denoting a scale of temperature on which water freezes at 32° and boils at 212° under standard conditions.
Reflection, Refraction, Diffraction, Polarization
Refraction, in physics, the change in direction of a wave passing from one medium to another caused by its change in speed. For example, waves in deep water travel faster than in shallow.
Diffraction refers to various phenomena that occur when a wave encounters an obstacle or a slit. It is defined as the bending of light around the corners of an obstacle or aperture into the region of geometrical shadow of the obstacle. ... Diffraction has an impact on the acoustic space.
Polarization, property of certain electromagnetic radiations in which the direction and magnitude of the vibrating electric field are related in a specified way. Light waves are transverse: that is, the vibrating electric vector associated with each wave is perpendicular to the direction of propagation.
Essay Prompt #1- What are the differences and similarities between magnetism and electricity?
Similarities between magnetic fields and electric fields: Electric fields are produced by two kinds of charges, positive and negative. Magnetic fields are associated with two magnetic poles, north and south, although they are also produced by charges (but moving charges). Like poles repel; unlike poles attract.
Essay Prompt #2- Explain heat using molecules and explain why water is different
Water's high heat capacity is a property caused by hydrogen bonding among water molecules. When heat is absorbed, hydrogen bonds are broken and water molecules can move freely. ... Specific heat is defined as the amount of heat one gram of a substance must absorb or lose to change its temperature by one degree Celsius.
Essay Prompt #3- Why is electricity like a river?
When electric charges move in a wire, we say that an electric current flows in the wire. It's like the way a current of water flows in a river. For an electric current to flow, we need two things: something to make the electricity flow, such as a battery or power pack.
Essay Prompt #4- What is the difference between momentum and force?
Momentum is amount of motion in a moving body, whereas force is an action of push or pull. Force does not change for constant acceleration whereas momentum changes. Momentum increases with time for an applied force. The direction of momentum depends on the direction of velocity.
Essay Prompt #5- Explain resonance by pushing a swing
A familiar example is a playground swing, which acts as a pendulum. Pushing a person in a swing in time with the natural interval of the swing (its resonant frequency) makes the swing go higher and higher (maximum amplitude), while attempts to push the swing at a faster or slower tempo produce smaller arcs.
THIS SET IS OFTEN IN FOLDERS WITH...
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